Thread: BBC discovers that Oyster users can be overcharged for incomplete journeys
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Old March 11th 11, 09:55 AM posted to uk.transport.london
Roland Perry Roland Perry is offline
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Default BBC discovers that Oyster users can be overcharged for incomplete journeys
In message , at 10:42:01 on Fri, 11 Mar
2011, d remarked:

There are different sots of security tag, just like there are different
sorts of "RFID" tag inside transport cards, or used for things like road
tolls. Much confusion arises when people assume these are all the same
technology.

Well I know there are different sorts - but that doesn't mean there isn't
a type thats RF powered. In fact the latest RFID tags are designed to be
powered up from a distance of a few feet and read.

I'm quite sure there will be battery-powered and RF-powered examples of
both retail security tags *and* transport cards.

But even that doesn't mean all the RF-powered ones will have the same
characteristics.
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Roland Perry
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