Ken Shirriff on Nostr: To use the Montreal subway, you tap a paper ticket against the turnstile and it ...
To use the Montreal subway, you tap a paper ticket against the turnstile and it opens. But how does it work? And how can the ticket be so cheap that it's disposable? I opened up the tiny NFC chip inside to find out more... 1/15
Published at
2024-06-23 16:01:42Event JSON
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