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Topic: "Long" range RFID (Read 1 time) previous topic - next topic


I have a project where I'd like to detect presence based on RFID. Kind of like the keyless start/entry systems you find on cars.

I essentially need to be able to detect whether someone with an RFID card in their pocket is inside the car or just outside.

I'm guessing the solution is a few ID2s and some decent sized antennas, but what are other people's thoughts on this, and where can I source the antennas from?


To a close approximation near-field antennas are just coils of wire.  The larger the coil the larger its detection area, but it will pick up more noise and interference...
[ I will NOT respond to personal messages, I WILL delete them, use the forum please ]

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