[kypro]

If it's on device and the output is hashed I don't see much of a problem with it. I guess the question would be whether you can trust big tech companies / governments not to have some backdoor to the raw data and what your concern would be if they did have that data.

Here in the UK face ID is pretty common place so I must admit my phone having this data is probably the least of my concerns. For example, one guy I know can't buy his own groceries anymore because he stole some food products from one of our major supermarkets, and since all major supermarkets in the UK have linked facial id systems he's now effectively banned from all supermarkets lmao.