Contactless bank cards

Cybergibbons cybergibbons at
Tue Nov 16 15:24:02 GMT 2010

On 16 November 2010 15:11, Roland Perry <lists at> wrote:
> I've never actually found a machine to try my card out upon. But the Oyster
> pads in London require the card to be pretty much out of a wallet and
> touching the surface. Similarly the RFID cards used on the buses in
> Nottingham. The technology is dozens of order of magnitude away from
> scanning the bus pass in the passenger's pocket as he gets on board.

There's a world of difference between the range of the readers used on
barriers and the maximum possible range using specialist equipment.
The barrier readers have a deliberately short range to avoid swiping
by mistake and also to stop reliance on the pretty poor anti-collision
in the Mifare cards.


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