System and method for handling user keys and user passwords...

Details System and method for handling user keys and user passwords... System and method for handling user keys and user passwords...

2011-04-19

2011-04-19

Zimmerman, Brian A (Department: 2612)

Communications: electrical

Selective

Interrogation response

Reexamination Certificate

active

07928831

ABSTRACT:
In railroad uses or the like, a transponder having a single key for transactions is accessible through a reader/programmer to multiple users or owners. The reader/programmer receives a transaction request and determines whether the user or owner is authorized for that transaction. If so, the reader/programmer generates the key on the fly and performs the transaction.

REFERENCES:
patent: 6873260 (2005-03-01), Lancos et al.
patent: 6980087 (2005-12-01), Zukowski
patent: 2005/0036620 (2005-02-01), Casden et al.
patent: 2005/0061875 (2005-03-01), Zai et al.
patent: 2008/0109897 (2008-05-01), Moran et al.

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