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Inside the tiny chip that powers Montreal subway tickets (www.righto.com)

submitted 5 months ago by newiceberg@piefed.social to c/technology@lemmy.world

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To use the Montreal subway (the Métro), you tap a paper ticket against the turnstile and it opens. The ticket works through a system called NFC, but what's happening internally? How does the ticket work without a battery? How does it communicate with the turnstile? And how can it be so cheap that you can throw the ticket away after one use? To answer these questions, I opened up a ticket and examined the tiny chip inside.

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[-] Ketram 7 points 5 months ago

Thank you for the link! Always had only a vague understand of NFC communication.

[-] bzarb8ni@lemm.ee 4 points 5 months ago

Yeah, really appreciated that thorough breakdown!

this post was submitted on 23 Jun 2024

155 points (100.0% liked)

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