The same public where you're constantly leaving your fingerprints, where your face is being constantly recorded and scanned into multiple facial recognition systems, where your DNA is being constantly shed? When everything needed to unlock your phone can be taken off of your corpse or just reconstructed from what you leave everywhere you go you're not really "secure".
Ffs, taking usable fingerprints is not that easy
Facial recognition cameras don’t use or give you the same data that FaceID’s 3D depth mapping FaceID uses, besides few cameras get close enough to practically reconstruct a useful 3D mask that could fool it.
And if you’re a corpse why would you care?
Exactly! Biometrics have never been less secure than they are now. It's approaching Social Security number levels of insecure. LOL
Nobody is going to all that trouble to unlock my phone, they'll just beat me with a hammer until I unlock it for them