Contactless bank cards
pwt at iosis.co.uk
Thu Nov 18 07:05:03 GMT 2010
Roland Perry wrote:
>> 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 IS a longer distance scanning technology, but it depends on
changing to a self-powered token instead of an unpowered smart device
that needs the associated terminal to provide the smart device's power
. There is also a risk that mobile phone based methods using NFC
technology will wake up the tokens when the field strength from the
terminal is lower than needed to wake up an ordinary smart card - but
with NFC you should be getting a message on the phone's screen (and
maybe a squeal as well) to show that a value transaction has taken place.
 Be-In Be-Out (BiBo) and Check-In Be-Out (Cibo). See DfT research report:
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