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PDAs for a Disabled Man?
Ed-Wars asks: "I work for a man who suffers from ALS (Lou Gehrig's Disease) and is mostly paralyzed, including a very limited ability to speak. He is looking for a portable device with a keyboard which will allow him to communicate with others while he is away from home. Wish-list: cheap, good sized screen with highly visible lettering, large and widely spaced buttons, ability to store/retrieve commonly used statements. It doesn't need to be high-powered or have any fancy graphics, again cheap is important. Text-to-speech could be useful, but is not necessary. Any suggestions you could give would be very helpful. Thanks!"
I am somewhat involved in product development for portable machines for law-enforcement, so have a bit of an idea about what is what in portable land these days. First of all, "cheap" is a relative term - with these things, much like all else, you get what you pay for. If this would be your employers only reliable bridge with the outside world, I would have a good think about system criticality, and the relative worth of such.
Secondly, I assume from your question that you are looking for an off-the shelf solution in terms of software. There are plenty of off-the shelf systems that do TTS, but you may need to look at custom stuff, depending on the physical state and limitations of your employer.You may want to consider getting something done in-house, so to speak.
Hardware wise, in terms of form-factor, functionality and ruggedness, you may want to look at any of the current crop of handtops out there. However, they may be a bit expensive in terms of value for money. Tablet PC's are a bit expensive, and can be a bit fragile. They are also unwieldy. On the other hand, they give you a very good price/performance ratio, so could equate well in terms of value for money. Battery life may also be an issue. Finally, you can look at using wearable systems - they have come a long way, and with the right kind of setup, they can really be what you are looking for. From that link, you may want to look at the MA-TC system or the Xyberkids system. both have pro's and con's. However - they are really, really expensive - but I would probably go with the MA-TC platform, with a good HMD system.
Software wise, I would go with Linux as the core OS - can't beat value for money, stability, and software availability. I would combine that with Dasher for the input system, linked perhaps with Festival.
Also, to your employer: don't underestimate the value of working with professionals that know what they are talking about.
People who think they know everything are a great annoyance to those of us who do.
My mother-in-law's friend is also going through ALS currently and has the same issue. Apparently MDA provides a PDA with the features you mentioned to people with ALS. IANAD but I was told that ALS is a form of Muscular Dystrophy. I sorry that I cannot provide specs on hardware, but I recently threw out the paper it was on. If I locate the information I will reply to this post.
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