From Trump campaign signs to Planned Parenthood bumper stickers, license plate readers around the US are creating searchable databases that reveal Americans’ political leanings and more.
You could just copy others signed codes, so you would also need some sort of totp system.
Then you could still place some camera capturing and streaming plates of parked cars in real time, so you’d either need 2 way communication with the license plates, where the cameraa tell them to show a code for some specific nonce, and which you could then potentially still stream so would also need severe latency checks, or you would have to get way more reliable gps and make that part of the totp.
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plate number is tied to a VIN which describes the make/model. (sir, this is a
wendystoyota. where is the honda?) -
replies not required from the plate - plate has a specialized qrcode printed across the entire plate (infrared reflector?) with an identifier (lic + other public info?) and signed with an RSA keypair - reader can authenticate the information and a qrcode read counts as a verifiably good read
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…or just ship RFID tags in the yearly inspection stickers - same cryptographic concept
none of this is hard or costly. only impediment is public rejection and we all know that can be managed.
