What discontinued feature do you miss from phones or other technologies? - Lemmy.zip

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