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The passport card is also an option, one that’s small enough to fit in a wallet. It can be used to cross land borders, and to fly domestically (but not internationally).

Unlike most driver’s licenses, a passport card doesn’t expose one’s address. This makes it a great form of ID to use in non‐airport situations as well.

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> Unlike most driver’s licenses, a passport card doesn’t expose one’s address.

Coincidentally, this is also how it works with German passports. You're legally required to have either an ID card or a passport (or can have both.) The former has your address and comes with a bunch of ever-changing digital signature/ID features (that you need a special reader or app for). The latter is just a biometric (still RFID but well) passport, with only the city (issuing authority) listed.

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