bill,
You're correct, except that RFID setups have to be carefully taylored
to specific situations, re: distances from reader and between lables etc.
get the tags too close together and it can either get confussed or read both
so you can't tell which is which.

Looks like RNIB appropriately made it work only at very short
range which is fine for that app.

It does not, however, look like RFID is the right technology, for example,
for finding products on a crowded shelf etc.

tom Fowle

On Wed, Sep 30, 2009 at 01:40:03PM -0500, wstep...@everestkc.net wrote:
> Department of Defense here in the States is doing a lot in the way of 
> implementing RF ID into its supply chain, and I actually had some training on 
> this stuff last week.  Apparently, there are two generations of chips out 
> there, and I suspect without knowing, that the RNIB product uses the older 
> and no longer exceptable to DOD generation.  In a supply system, there would 
> be a computer on the back end of the reader somewhere, and there's no reason 
> I can think of why it wouldn't be possible to use a reader chip reader in 
> conjunction with a Pc with speech.  Obviously you wouldn't have the 
> portability, but you wouldn't be limited to audio only either.
> 
> Bill Stephan 
> Kansas Citty MO 
> Email: wstep...@everestkc.net 
> Phone: (816)803-2469
> 
> 
> ----- Original Message -----
> From: jim <cheet...@frontiernet.net>
> Date: Wednesday, September 30, 2009 1:21 pm
> Subject: Re: [BlindHandyMan] Barcode scanning app for the IPhone.
> > hi dan and every one else that doesn't know 
> > the pen friend does not read bar codes. 
> > it reads rfid tags. 
> > thats why the pens can only use there tags and you have to be 
> > carful what searies of tags you get. 
> > i went to the rnib site and they  said they were rfid tags.jim 
> > 
> > 
> > [Non-text portions of this message have been removed] 
> > 
> > 

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