Contactless bank cards

[Roland Perry]

In article 
<AANLkTinN1_26-O+ATrbwoKkS1jfZbfAqockcD8gGoAWX at mail.gmail.com>, 
Cybergibbons <cybergibbons at gmail.com> writes
>It's perfectly possible to relay RFID communications over a distance.
>
>It's easy to demonstrate this using two RFID readers with PN53x chips
>in them - one reads the card, the other emulates it.
>http://www.libnfc.org/documentation/examples/nfc-relay
>
>If you use USB, the latency and unpredictability causes issues with
>some card readers - this doesn't work to relay to TFL readers for
>example. However, you can use any microprocessor to perform the relay

I don't really understand what you mean by "any microprocessor"

>to avoid this, and use an RF link instead of wires.

An RF link with more bandwidth than USB, presumably? Or is it just "less 
latency per packet"?
-- 
Roland Perry