Comment Protips (Score 1) 238
If you don't want "the government" to use your face (or finger) to unlock your iPhone with a warrant, don't use Face ID (or Touch ID).
Use a strong passphrase instead, which you cannot be compelled to provide under the 5th Amendment.
Or, alternatively, don't be a murderer, child sex trafficker, or child pornographer. And no, that's not a different version of "if you have done nothing wrong, you have nothing to hide"; it's a literal recommendation.