<<Disclaimer:  Verify this information before applying it to your situation.>>
 
At 08:31 PM 10/2/95 -0400, jerry wald <[log in to unmask]> wrote:
 
>An interesting concept, but you would still need the co-operation of the
>manufacturer to properly encode the package.
 
The way I understood the idea was the hand held device would have a memory
with a database of all the UPCs that were GF. Then it would just check
against its own database. In practice it would be easy to use a PC program
to prepare the list of numbers and send it into the device.
 
Don Wiss.