For me its the ‘Knock Code’ that LG had on their phones (I really wish LG still made at least the V series phones)
Basically there was a four-square area and you set up a sequence of where you would tap to unlock the phone. That set of squares was only shown when you set up the code
Then, to unlock your phone, you would tap those areas in the sequence you set up (even with the screen off).
Fingerprint readers are nice, but I really do miss the knock code
Edit: did find this article with a way to do the knock code, but if done wrong, could brick your phone I guess.
Plus, article is from 2014. When I looked at XDA’s info on it (they also being the developers) it looks like development on it is over, but individual modules may or may not still be supported by their devs
Only problem is all the apps that won’t run in a rooted environment. I’m not sure why they should even know that information…
there’s some projects that exist that try their best to hide root from specified apps to make them seem as if they aren’t running in a rooted environment of course, they can’t completely hide all traces but most of the time they’re usually actively updated to make most apps seem as if they really aren’t running in a rooted environment