aids. We should consider each on its own merits and tell the
> designers why we like or dislike any new device we are shown.
> Also, I think we need to develop some criteria for an electronic
> travel aid that we would find useful. Here are a few from yours
Second, the device has to provide us with information in such a way
> as to increase our efficiency of travel or increase our ability to
> learn about the surrounding environment without sighted assistance.
> How such a device would do this is difficult for me to imagine, but
> I think that it could be done if we do not limit our thinking on
> this subject.
Your first part of point two is important.
An aid must make us more efficient or provide us with
information to do more things quicker or with
more independence. It is probably possible, with enough
money to give us lots of information about the environment.
Most of it would be irrelivant though,
it might be of interest, but wouldn't help us travel
David Andrews, director
International Braille and Technology Center
for the Blind
National Federation of the Blind
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