> I dont want to get involved in the finger print reader algo's because it =
is very
> involved, but I am unable to find info on a fingerprint reader that can s=
end only a
> user ID via rs232 after verification

This is probably because to authenticate within the reader then send a 'go'=
 command down a communications link is a security loop hole. It is more sec=
ure to send data that gets authenticated elsewhere - until someone realises=
 how simple it is to fool a reader ...
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