How Face id unlock works in android

When i try to check the hardware availability for face id some devices like Samsung s10+, fold returns false but bio-metric authentication works with face id. i want to know whether the package manager returns false information or Samsung handling the face id in a different way?

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I have the same question,
when I using android sdk: BiometricPrompt to check device’s biometric data,
I only get false from API.

Hi Rajjaz,

If the application call BiometricPrompt.authenticate() with CryptoObject, it permits only strong biometrics such as fingerprint.

If BiometricPrompt.authenticate() is called without CryptoObject it will permit face recognition (and other biometric which is not strong) along with fingerprint.

Thank you.