Linux - Authenticate with Android Phone or TOTP?

Hello. I recently acquired a Surface Go (1st gen, 4 GB RAM, 64 GB EMMC) and installed Fedora Workstation (and Phosh as a second DE). I do not have a keyboard for this device, so usually, I have to use the on-screen keyboard. Entering a sufficiently secure password whenever I wake it from sleep or need elevated permissions/sudo...