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$5 seems unrealistically low. The Tesla keys supposably have higher security, I remember they changed the software to address some vulnerability. My fobs each serviced 4 years w.o. breaking over 4 years

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bank cards with identical security (secure element) cost well under $5, in bulk maybe even under a dollar.

It's as if price and cost are different! Subaru wanted to charge me too much to replace a fob, last time I asked.

The price of bank cards to users is blended into the product, however, some charge a low single dollar digits for frequent replacements.

It's not at all unexpected a key card for a Tesla would be low.

Seems to be $25, which is much cheaper than most remote keys.

https://shop.tesla.com/product/model-3-key-card

That's for two cards as well, so only ~$12/ea. Pretty reasonable.

Not identical security method though. This is over bluetooth and has way more electronics in it than a chip-and-pin card.

By comparison, the NFC-based 'Keycards' that the Tesla Model 3 has can be replaced for $6 each.

bank cards can be tapped on NFC terminals: ISO/IEC 14443

What is the security model delta here?

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