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

    • @[email protected]
      2•11 months ago

      Eh, I was worried about this when I got my current phone but I’m the end I like it much better. It’s just as reactive for me, and has the added bonus that I can unlock the phone while it’s resting on a table without having to pick it up, I guess I do that a fair bit because it was a pain point I felt with my previous phone.