Wearable-HOWTO.
 Lionel, trollhunter Bouchpan-Lerust-Juery <trollhunter@lin-
 uxfr.org>

 v0.0.5, December 1999

 Nomadism is one of the major trends of our society, now most of the
 people can work with a laptop computer, but few did the next step: to
 live, or if you prefer to wear one computer that is a wearable.
 ______________________________________________________________________

 Table of Contents






















































 1. Foreword

 2. What is a Wearable anyway ?

 3. Copyright, Disclaimer and Trademarks

 4. Advocacy

    4.1 Why ?
    4.2 The Wearable concept is not a revolution, it is just an evolution.
    4.3 The Wearable may give its user an edge.
    4.4 The Wearable concept: a stealth menace.
    4.5 Wearable computing: an emerging industry.

 5. What CPU ?

    5.1 PDA based Wearables
    5.2 PC/104 and laptop based Wearables.
       5.2.1 What is PC/104 ?
       5.2.2 What about PC/104-plus ?
    5.3 Misc

 6. Power supply

 7. OS

 8. The Sulawesi project.

 9. Input

    9.1 Variations around the keyboard
       9.1.1 Mini keyboards
       9.1.2 One hand keyboard.

 10. Audio Output

 11. Visual Output

    11.1 Head Down displays.
       11.1.1 Wristwatch type
       11.1.2 PDA type
    11.2 Head UP displays
       11.2.1 Obstrusives displays
          11.2.1.1 Hacks with LEDs
          11.2.1.2 Sony GLASSTRON
          11.2.1.3 The VRD ( Virtual Retinal Display )
       11.2.2 Nonobstrusives displays

 12. Comms

 13. How can I have my Wearable ?

    13.1 Commercial Solutions.
    13.2 Do it yourself.

 14. PalmPilot and its clone  ( IBM, HandSpring, TRG ): a new breed of wearables.

 15. How to carry my wearable ?

 16. Applications with Wearables.

    16.1 In the army now.
    16.2 At the hospital
    16.3 With the firefighters
    16.4 Wearable for the disabled.

 17. A borg's life.

 18. Sources of Information

    18.1 Non commercial
    18.2 Commercial.

 19. To do List.

 20. Revision History

 21. Thanks and Credits



 ______________________________________________________________________

 11..

 FFoorreewwoorrdd

 I am not a guru in wearable computing, simply after some years using
 HP95LX and HP200LX palmtop computers more like  wearables than like a
 PDA ( thanks to DOS 5, the HP200LX even allowed me to do a semester CS
 project using turbo pascal while commuting in the subway ),  and
 living with a palm III and a laptop running Linux, to me the next step
 is having a wearable running Linux, thus I have spent more than a year
 reading various informations on wearable and taking a little part in
 the wear-hard mailing list. As more an more people will be interested
 in the wearable concept I have decided to start this HOWTO in order to
 help them ( At the time of this writing I am building my own wearable
 using my laptop ( Toshiba 430CDT ) with a twiddler keyboard,
 emacspeak, and camcorders batteries. )

 Some people may, at least, be surprised to find the "In the army now"
 section so I would like to explain my position: I am trying to write
 this HOWTO both as a journalist and a scientist would do: this implies
 as a journalist to look for information from every source available,
 and as a scientist to be neutral: and as the US Army is willing to
 purchase more than 30.000 units one can hardly overlook this user
 group.  This document is  intended to be the starting point of a long
 term work. If you have any information ( that can be checked ) that
 you think is of interest, do not hesitate contact me.




 22..  WWhhaatt iiss aa WWeeaarraabbllee aannyywwaayy ??

 Well, as it name implies a wearable is a computer you are supposed to
 wear, actually very few wearables fill this definition. On a more
 practical point of view one can define a wearable as a computer you
 can use on the run relying only on its  power supply ( see the power
 supply section for more information ). So with such a definition PDAs,
 palmcomputers, customized laptops are wearables too.

 I am not a specialist in wearables, simply I have a very strong
 interest in nomadic computing and I studying a lot its implementations
 both from a technical point of view and from the way nomadic computing
 is going to change our every day life and the way we interacts as we
 are getting more and more connected.

 This text is included in the LINUX DOCUMENTATION PROJECT
 http://linuxdoc.org/LDP <http://linuxdoc.org/LDP> .


 The latest version of this document is available in HTML format at
 http://infonomade.linuxfr.org/Wearable-HOWTO.html
 <http://infonomade.linuxfr.org/wearable/Wearable-HOWTO.html>, you can
 retrieve the sgml format at  http://infonomade.linuxfr.org/Wearable-
 HOWTO.sgml <http://infonoamde.linuxfr.org/wearable/Wearable-
 HOWTO.html>

 I will maintain the French version too. If you wish to mirror it or to
 translate it, please contact me.

 Lionel, Trollhunter Bouchpan-Lerust-Juery <[email protected]> or
 at <[email protected]>


 33..

 CCooppyyrriigghhtt,, DDiissccllaaiimmeerr aanndd TTrraaddeemmaarrkkss

 Copyright (C) 1999 by Lionel, trollhunter Bouchpan-Lerust-Juery. This
 document may be distributed under the terms set forth in the LDP
 license at http://linuxdoc.org/LDP/COPYRIGHT.html
 <http://www.linuxdoc.org/LDP/COPYRIGHT.html> .

 This is free documentation. It is distributed in the hope that it will
 be useful, but without any warranty. The information in this document
 is correct to the best of my knowledge, but there's a always a chance
 I've made some mistakes, so don't follow everything too blindly,
 especially if it seems wrong. Nothing here should have a detrimental
 effect on your computer, but just in case I take no responsibility for
 any damages incurred from the use of the information contained herein.

 In this document you will encounter some commercial products and
 brands. Theses products are cited for information purpose, it is not
 an endorsement from the author. The trademarks belong to their
 respective owners.


 44..

 AAddvvooccaaccyy

 Some people may want to know why you want to build a wearable or you
 may have to sell your idea to the people who are responsible for the
 purchase.  Here are some ideas you may use.


 44..11..

 WWhhyy ??

 Because, you want to experiment by yourself, because you think that
 Human Computer Interaction is not a matter of designing the n-th
 windowmanager, because you feel that enhanced reality is the cutting
 edge of your evolution.



 44..22..

 TThhee WWeeaarraabbllee ccoonncceepptt iiss nnoott aa rreevvoolluuttiioonn,, iitt iiss jjuusstt aann eevvoolluuttiioonn..

 Some people are afraid of revolutionary or so called products, thus
 the good news is that the wearable may look like a revolutionary
 concept but it is actually just an evolution of the computing
 hardware.  Let me explain that : At first there was the Mainframe,
 then came the desktop computer enabling people to work in their
 office, latter the PC enabled these people to work at home too, as
 time passed the portable PC enabled people to work in a Hotel room, or
 everywhere they could find a power plug ( yes an Osborne or an IBM's
 convertible were definitively not laptop computers ), at the same time
 some pocket computers appeared on the market : Sharp PC1500, Canon
 X07, Casio PB100 then the first one weighted less and less, the second
 one disappeared but the LCD screen was, with other things their legacy
 allowing the laptop to emerge, as the laptop went mainstream, its size
 went smaller allowing people to work in the train, at the library ...,
 then palmtop PC's such as the HP95LX and PDA's appeared, ( at this
 time the most successful is the PalmPilot family and its clones )
 allowing people to work on the move, so the wearable is just the next
 step in this move towards miniaturization.  ( If you want to learn
 more about Laptops and Linux you should read the Laptop-HOWTO, the
 latest version can be found at Werner's Heuser Homepage
 <http://www.snafu.de/~wehe/index_li.html> )

 44..33..

 TThhee WWeeaarraabbllee mmaayy ggiivvee iittss uusseerr aann eeddggee..


 In today's competitive world it is very important to get an edge over
 the other company, thus for example in a plane repair company the
 engineers who are using wearables do not waste time in asking for
 blueprints but instead have the blueprint and the technical data at
 will while performing their job, thus they will be able to repair the
 planes faster. You may choose an example in your job.


 44..44..

 TThhee WWeeaarraabbllee ccoonncceepptt:: aa sstteeaalltthh mmeennaaccee..

 When they made their first appearance on the market, some products or
 technologies were, to say the least, less than perfect. This is a
 stealth menace, if you read Clayton Christensen's book "The
 innovator's dilemma: when new technologies cause great firms to fail"
 or Andy's Grove "Only the paranoid survives" you will see that some
 corporations that relies on a product and that have a king of the hill
 may fall down because they overlooked a new product/technology that
 was clumsy at its beginning and was at first in a market niche, then
 the contender took over the market.


 44..55..

 WWeeaarraabbllee ccoommppuuttiinngg:: aann eemmeerrggiinngg iinndduussttrryy..

 The people who decide to fund your project are not always very found
 about technical details, thus you will have to use other arguments,
 otherwise your pet project will be sent to /dev/null.  If one reads
 again chapter 2 of AP Sloan's book: "My years with General Motors" it
 is obvious that the Wearable industry is going into the same changes
 as did the automobile industry in the US at the turn of the century :
 it turned from a Hobby with some small manufacturers to a mass market
 Industry. It took nearly 30 years to the automobile industry to
 change, but the wearable industry should have done this changes in
 less than 5 years, so if they don't invest on this product others will
 do.


 55..

 WWhhaatt CCPPUU ??

 55..11..

 PPDDAA bbaasseedd WWeeaarraabblleess

 Usually they use non Intel CPU ( except the HP95/100/200LX ) See the
 PalmPilot : a new breed of wearables section.


 55..22..

 PPCC//110044 aanndd llaappttoopp bbaasseedd WWeeaarraabblleess..

 Theses devices are using usually an Intel or Intel compatible CPU.


 55..22..11..

 WWhhaatt iiss PPCC//110044 ??

 PC/104 is an industrial standard, for PC based systems that can be
 stacked together in order to create an embedded system.  The footprint
 of theses boards is 4"x4" so as you can see it is a good base in order
 to start a wearable project.


 55..22..22..

 WWhhaatt aabboouutt PPCC//110044--pplluuss ??

 It is a PCI addition to the PC/104 standard.  you can read the PC-104
 FAQ <http://www.controlled.com/pc104faq>

 55..33..

 MMiisscc

 Last year there were some alpha based Multia sold for around $100, but
 it seemed AFAIK that nobody ever managed to build a wearable around
 one of theses devices.


 66..

 PPoowweerr ssuuppppllyy

 There is plenty of choice as long as you use batteries. But be careful
 __NEVER__ use liquid acid filled batteries it is a Health Hazard for
 this application.

 77..

 OOSS

 For the people whose Wearable is based on a PDA, there is little
 choice : most of the time they have to do with the PDA's manufacturer
 OS, AFAIK Linux on Psion series 5 is not mainstream.  a commercial
 solution called WindStone primary targeted to palmpilots with a
 project to port it to ARM based computers it is made by OSK
 <http://www.oski.co.kr/>, so wait and see


 For those using a PC derivative, the choice seems to be between
 Microsoft products or Linux, Well,  Microsoft products are not exactly
 the best choice and DEBIAN/GNU Linux is the winner ( I don't think
 that for general purposes one has to use a posix .4 compliant kernel
 ).
 There is another contender QNX <http://www.qnx.com>, but is more
 industrial oriented, so for hobby or research it is not the best
 choice.


 88..

 TThhee SSuullaawweessii pprroojjeecctt..

 This project deals as well with input modalities and with output
 modalities thus its section is just before the Input/Output part of
 this document.

 It is meant to accept input from different modalities and to do its
 input to a number of different modalities, this is written in Java;
 The good news is that it is highly portable, the bad news is that
 today a JVM is a memory and resource hog ( but, to me, Java and the
 related technologies such as Jini, just like the wearable, is a
 stealth menace ).  One of the nice features of this project is the
 fact that, because of a clever design, it can deal with with a great
 input and output modalities that exists today, and when new modalities
 one hadn't even think about will be available, it should be able to
 deal with them in a very short time and with little effort.

 Today, can accept input from a GPS too.  You can find more information
 at : Sulawesi Home Page <http://vasewww.essex.ac.uk/projects/>

 99..

 IInnppuutt


 99..11..

 VVaarriiaattiioonnss aarroouunndd tthhee kkeeyybbooaarrdd


 99..11..11..

 MMiinnii kkeeyybbooaarrddss

 Usually theses devices are on the wearer's forearm or wrist.

 The WristPC <http://www.pfuca.com/products/hhkb/hhcindex.html>
 Keyboard  and the Arm mount micro keyboard
 <http://www.ivpgi.com/1accessory.htm> from the Phoenix Group Inc.  are
 typical from this concept.


 99..11..22..

 OOnnee hhaanndd kkeeyybbooaarrdd..

 IMHO it is the best concept because it doesn't require you to look at
 the keyboard while typing is the less intrusive when you have to deal
 with other people, and in order to be accepted by other a Wearable
 wearer's must have the lowest visual signature.

 The archetype of this concept is the Twiddler <http://www.handkey.com>
 and all of its clones.






 1100..

 AAuuddiioo OOuuttppuutt

 When your system doesn't output too much data, or in order to signal
 some special events an audio output can do the job.  Most laptops come
 with a Sound Blaster compatible sound card and a lot of PC-104 cards
 are sold with such a sound card on board or you should buy a sound
 module. The next step is to redirect your text output to a
 text_to_speak program.

 As a lot of input is done using emacs, it seems to be a good idea to
 use  Emacsspeak
 <http://www.cs.cornell.edu/home/raman/emacspeak/emacspeak.html>



 1111..

 VViissuuaall OOuuttppuutt



 1111..11..

 HHeeaadd DDoowwnn ddiissppllaayyss..

 1111..11..11..

 WWrriissttwwaattcchh ttyyppee

 Some manufacturers ( eg Seiko, Citizen, Casio ) manufactured
 Wristwatches that could be linked to a computer, ( I remember that in
 1982 Seiko showed a prototype of a wirstwatch TV ( monochrome LCD )).

 It is also possible to use a 4 lines LCD display connected to the
 serial port of your laptop ( numerous paper or online electronics
 magazine offer schematics ).


 1111..11..22..

 PPDDAA ttyyppee

 PDA's seem to be a cheap and efficient way of sending and displaying
 data for a wearable, actually any PDA with a VT100 emulation program
 and a serial link can be used effectively as a terminal ( I have
 successfully used my HP200LX running

 kermit  <http://www.columbia.edu/kermit>

 as a terminal for my desktop, giving me an emergency access to it if
 the display failed )


 1111..22..

 HHeeaadd UUPP ddiissppllaayyss

 The distinction between obstrusives an non obstrusives ones is not
 from the wearer point of view but from the other people, that is is
 the display forbid to see the wearer's eyes




 1111..22..11..

 OObbssttrruussiivveess ddiissppllaayyss


 1111..22..11..11..

 HHaacckkss wwiitthh LLEEDDss

 Some people managed to use blinking LEDs in order to retrieve
 information from their device. This is one of the simplest display one
 can imagine : a LED or a row of LED blinking.


 1111..22..11..22..

 SSoonnyy GGLLAASSSSTTRROONN

 Sony sells a device called the Glasstron


 1111..22..11..33..

 TThhee VVRRDD (( VViirrttuuaall RReettiinnaall DDiissppllaayy ))

 With this device a LASER LED draws the image on the wearer's retina,
 the US Navy tested it in the summer 1999, at Hawaii ( see in the army
 now ).

 1111..22..22..

 NNoonnoobbssttrruussiivveess ddiissppllaayyss

 The Microptical  <http://www.microopticalcorp.com>corporation
 manufactures two displays the Integrated Eyeglass display and the
 ClipOn display.

 1122..

 CCoommmmss

 AFAIK Most of the time it is with a radio link, should it be with a
 radio transceiver or via a cell phone.


 1133..

 HHooww ccaann II hhaavvee mmyy WWeeaarraabbllee ??


 1133..11..

 CCoommmmeerrcciiaall SSoolluuttiioonnss..

 Some companies sells Wearables ready to use out of the Box, hereafter
 is a list of them.


 +o  Genesys Technology  <http://www.genesistech2000.com/product.html>
    manufactures a Wearable that uses a HMD display.

 +o  handsfreemobile  <http://www.handsfreemobile.com> sells the Mid
    Riff Brain, it is mostly an LCD touchpad based solution and the
    unit is in a pouch fixed on the waistband.


 +o  Teltronics  <http://www.teltronics.com/is/hardware.html > sells the
    Mentis. It is a modular wearable.

 +o  Via  <http://www.flexipc.com/ > sells the VIA II PC a Wearable that
    is worn on the waistband.

 +o  Xybernaut  <http://www.xybernaut.com/ > sells the Mobile Assistant
    IV ( MA IV )

 1133..22..

 DDoo iitt yyoouurrsseellff..

 As wearable computing is in its very early beginning you should make
 various experiments and share them with your peers.  Doing this with
 an open and versatile OS such as Linux should give you a lot of fun (
 after all, desktop computer is just a plain vanilla computer), because
 you play with both the OS and the hardware.  If you are unsure of the
 technical decisions you are going to make, you can start with a proven
 design such as the

 Lizzi  <http://wearables.www.media.mit.edu/projects/wearables> design
 and then change some components.  Thus you will not have to reinvent
 the wheel and you will avoid some pitfalls.


 1144..

 PPaallmmPPiilloott aanndd iittss cclloonnee  (( IIBBMM,, HHaannddSSpprriinngg,, TTRRGG )):: aa nneeww bbrreeeedd ooff
 wweeaarraabblleess..

 The PalmPilot family and its clone is a hit among PDAs, but less known
 is the fact that it is more than a PDA it is one of the first off the
 shelves wearable.  You can connect it to your cell phone, When on the
 move you may need an input device more convenient than Graffiti: a
 keyboard for example, one device exists that allow you to plug a PS/2
 keyboard in your palm: Happy Hacking cradle Specially for the Palm.

 PFU <http://www.pfuca.com/products/hhkb/hhcindex.html> Happy Hacking
 sells a PS/2 adapter for the Palm, thus one should be able to hook any
 PS/2 keyboard on this device.  It is battery ( 2 AA ) powered.

 It seems that someone has managed to get a twiddler keyboard working
 with the PalmPilot.  If you want to do land navigation it exists an
 electronic compass you can plug into your palm it is called Palm
 Navigator and it is manufactured by Precision Navigation
 <http://www.precisionnav.com> They even sell a weather station.

 If you have more money to spend or want more precision you can
 purchase a GPS receiver called Earthmate; it is manufactured by
 Precision Navigation <http://www.delorme.com> Some of you may want a
 software only solution: this can be done.  If you have some highly
 specialized needs like commuting without having the subway map and
 want a readily made solution you can use a program like Route Expert,
 I use it on a daily basis, it works great with Paris's subway and I
 will test it with Berlin's subway at the end of the year ( of course
 it exists other programs but this one is the one I am using ). I guess
 everyone can find the North using the sun and a wirtswatch, a
 PalmPilot can do it with more precision using readymade programs such
 as T.J's Sun-Compass ( once again there exists other programs but this
 one is the one I am using ).

 The most important with the PalmPilot for the Linux community is the
 fact that there exists two ports of Linux for it ( DragonBall is a
 member of the 68000 family after all ). One is GPLed

 You can find more information at : uClinux <http://www.uclinux.org>

 the second one is commercial, it is based in Korea.  WindStone
 <http://www.oski.co.kr> it is based on uClinux and it is coming  with
 its own GUI and widgets.

 Thus with the next generation of Palms, the CPU speed will be twice
 today's speed, and with Linux on board we will be able to run a lot of
 software that are hardware independent and have been written for
 today's x86 Linux based wearables.



 1155..

 HHooww ttoo ccaarrrryy mmyy wweeaarraabbllee ??

 Depending on your wearable's family ( eg Palm, palmtop computer,
 laptop based, PC/104 ) there seem to be 3 convenient ways of carrying
 it around.  You can carry it on tour wrist, or in a backpack or you
 can hang it on your waistband.


 1166..

 AApppplliiccaattiioonnss wwiitthh WWeeaarraabblleess..

 As a rule of thumb the first people who are going to use extensively
 the wearables are the people whose work is a matter of life and death.


 1166..11..

 IInn tthhee aarrmmyy nnooww..

 It is very important in an army to have an edge other the enemy, that
 is what we have always seen in history, and moreover the army is known
 to spend vast amount of money in order to get this edge.

 Some years ago the infantryman was ordered to carry different  pieces
 of ordnance that came from different sources and were not part of a
 whole thing, and to try to do his best with theses ( looks like
 Frankenstein to me ). With theses new projects the infantryman is the
 centerpiece of a coherent, complementary weapons and equipment system.


 +o  French Forces.

    In France there is a project called FELIN ( Fantassin a Equipement
    et Liaison Integrees ( Foot soldier with integrated equipment and
    links ) )

    in order to enhance the efficiency of the soldier a set of devices
    had been developed with very careful limitations : historically the
    foot soldier has been a beast of burden, thus the FELIN project
    wishes to limit its load at 25kg. The soldier has got a radio link,
    a computer and a camera on his weapon ( allowing him to open fire
    from cover ). The display is done  with a monocular HMD.

 +o  UK Forces.

    The FIST ( Future Integrated Soldier Technology ) project: Early
    tests were conducted on Salisbury Plain to determine if the soldier
    could access information either 'Head Up' ( in a helmet display ),
    'Head Down' ( on a wrist mounted display ), via a palmtop computer
    or if necessary  a map
    lessons learned ( in L'armement issue 67 September 1999 )

 +o  There is no scope for enhancing soldier performance through the
    provision of tactical information unless the soldier can access
    information 'on the move'

 +o  The preference, both by day and night was the helmet display.

    The FIST Digitization Trials will be conducted on Salisbury Plain
    in June and November 2000. The June trial addresses information
    flow, the November trial will address the benefits of enhanced
    information to determine if there is a consequent increase in the
    'Tempo of Operation'.

 +o  US Forces


 +o  The land warrior program

    It is a system made of 5 subsystems cooperating together.

 +o  A Pentium Computer/Radio Subsystem (C/RS) made by Motorola
    featuring an integrated GPS receiver

 +o  The Protective Clothing and Individual Equipment Subsystem (PCIE)
    made by Gentex

 +o  The Weapon Subsystem (WS) made by Raytheon

 +o  The Software Subsystem made by Raytheon

 +o  The Integrated Helmet Assembly Subsystem (IHAS) made by Honeywell

    The location of each squad member will be available through the
    IHAS, as well as digitized maps and tactical information.  Every
    soldier will have an integrated GPS as well as video recording
    capabilities.  Of course the soldier will have night vision
    capability as well as deported sighting. Tests should take place
    during year 2000.  More info on the Land Warrior program at

    http://www.sbccom.army.mil/programs/lw/index.htm
    <http://www.sbccom.army.mil/programs/lw/index.htm >

    ( There is even a FAQ and pictures ).  AFAIK this is going to be
    the biggest test for the wearable concept because the Army is
    planning to purchase 34000 units plus spares.

 +o  The navy.

    During the summer 1999 news poured that the US Navy tested the
    Virtual Retinal Display at Hawaii. The explanation is that there
    doesn't seem to be enough space in the fighting ships because of
    the numerous CRT, so it is conceivable for the crew to wear VRDs

    Needless to say, that some very low profile and highly specialized
    units should have adopted the wearable concept but as far as we
    cannot have evidence we can only speculate on that.

 1166..22..

 AAtt tthhee hhoossppiittaall

 The Microvison <http://www.mvis.com>'s VRD has been delivered
 <http://www.prnewswire.com/cnoc/exec/menu?127059> to the Wallace
 Kettering Neuroscience Institute, Dayton Ohio, for neurosurgery
 applications.  This is not a full featured wearable solution but it is
 a big step toward the adoption of wearables in health care activity.



 1166..33..

 WWiitthh tthhee ffiirreeffiigghhtteerrss

 Firefighters are using thermal cameras in order to see through the
 smoke, in the next years theses devices should be miniaturized and
 with a wearable firefighters should have both hands free and will have
 real time access to data such as the map of the building and numerous
 helpful informations.


 1166..44..

 WWeeaarraabbllee ffoorr tthhee ddiissaabblleedd..

 One can easily think that a wearable computer can be very helpfull for
 the disabled people, for example for blind people a wearable with a
 GPS receiver, some maps of the surroundings and even more, interacting
 with its surroundings by means of active beacons can be a very good
 substitute for a dog, the elements exists for a long time.

 This should be easily done : the linux comunity has good text to
 speech applications, voice recognition is quite ready for this
 application , the IrDA or Modem radio drivers are OK, the same applies
 to the GPS programs, we have to develop an electronic blind walking
 stick in order to detect the obstacles at a much reater range and
 last, but not the least to convince the autorities.


 1177..

 AA bboorrgg''ss lliiffee..

 This section deals with Human-Human interaction.  As the wearable is
 quite new for the layman one has to expect some strange reactions from
 the other people.  When I go out and read my PalmPilot's screen while
 walking or in the subway people have one of the following reactions :

 +o  No reaction: because they are in their own world or because they
    don't care.

 +o  Curiosity: they come to me and ask me questions like "what it is",
    "what are you doing with it" and "how much does it cost ?"

 +o  Disdain : they may think I want to draw attention.

 +o  Hostility/Fear : "this guy is nut: avoid him".

    Steve Mann Gave an interview in the New Scientist magazine and as
    he was one of the first to test the waters, so he has a long
    experience in this field.  The second problem is that the
    wearable's hardware is quite expensive and some predators will spot
    a new device that can be easily stolen and sold at a good price, or
    just in order to have one of them.  As a conclusion you have to be
    very cautious.


 1188..

 SSoouurrcceess ooff IInnffoorrmmaattiioonn


 1188..11..

 NNoonn ccoommmmeerrcciiaall


 A good starting point to gather information is to subscribe to the
 [email protected] mailing list, you have to send a message with the
 word subscribe in the subject to [email protected].

 The archive of this mailing list is mirrored at Wearable Central
 <http://wearables.blu.org> This site was founded to be an archive
 center for the mailing list and the newsgroup.  It is maintened by R.
 Paul McCarty.


 1188..22..

 CCoommmmeerrcciiaall..

 You can find information on the web sites of the company cited in the
 various sections of this document and as stated earlier in this
 document : The companies quoted here are just for your information
 only, I do not endorse any of their product, this just in order to
 help you.


 1199..

 TToo ddoo LLiisstt..

 This section is about things that have to be done for the next
 releases if you wish to contribute it is a good place to look at.

 +o  To review more in depth the sulawesi project.

 +o  Organic Leds are very interesting, I should cover theses too.

 +o  To expand the input/visual output sections.

 +o  To expand and reorder the advocacy section.

 +o  To have an "in the car" section.

 +o  The concept of an UW wearable seems viable lets think about it.

 +o  List and describe all projects.

 +o  List and describe all products.

 +o  To get some sleep.


 2200..

 RReevviissiioonn HHiissttoorryy


 +o  v 0.0.5 December 1999, first release.

 +o  v 0.0.1 November 1999, first draft.

 2211..

 TThhaannkkss aanndd CCrreeddiittss


 I would like to thank among other people:

 +o  Werner Heuser <[email protected]> <mailto:[email protected]> for the work
    he has done maintaining his Laptop-HOWTO
    <http://www.snafu.de/~wehe/index_li.html>

 +o  The people of the Wearable mailing list which proved to be very
    informative and open minded.

 +o  My friend Manu for his never ending patience and kindness.

 +o  The people of the Wearable community whose discussion and web sites
    strengthen my confidence in the wearable concept.

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