Reading NFC Passport Chips in Linux

I wonder if you could create a chip that could break the passport reader system. That could really disrupt things, so hopefully that’s not possible.

The ICAO documents contain the complete specification. It is moderately complex and involves twiddling lots of bits. So I've no doubt that a passport reader somewhere isn't doing bounds checking properly.

But you could achieve much the same effect with a hammer.

But could a hammer deliver a malicious payload that could spread in the system? I'm not sure if you could do that with data on the chip, but maybe.