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A comment on The tiny chip that powers Montreal subway tickets. Parent comment

Re:The tiny chip that powers Montreal subway tickets by stavros on Monday June 24, 2024 @04:23AM (#40773626)
A centralized system is how tags work already, so you can't toss your ticket to your friend behind you and have them reuse it.
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Re:The tiny chip that powers Montreal subway tickets by The_Colonel on Monday June 24, 2024 @05:30AM (#40773992)
These NFC chips have counters to deactivate themselves after the allocated number of trips has been reached.
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Re:The tiny chip that powers Montreal subway tickets by hgomersall on Monday June 24, 2024 @07:08AM (#40774583)
40 years ago we had a read-write system based on mechanical trimming of a piece of card and a physical time stamp[1]. It's absolutely possible to roll out a system to keep track of journeys that doesn't require fancy embedded ICs.

[1] https://www.facebook.com/uktvads/videos/kerching-a-saverstri...

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Re:The tiny chip that powers Montreal subway tickets by rswail on Wednesday June 26, 2024 @01:58AM (#40796854)
NFC tickets have "antipassback" features, eg, stores the last tap so you can't "toss your ticket to your friend behind you".
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