Should biometric authentication grant authorization to the previously logged in user in an Android app?

I want my users to be able to use biometrics for easier access, but I'm not sure if it's a standard practice (having in mind the security of it). I'm thinking of a situation where user A logged in on user's B device and later user B would use biometrics on xir own device to gain access to user A's, previously logged in, account.

I have no idea if it's common practice to ignore that situation or not.