I somes subconsciously correct typos even when not looking at them. It drives me crazy when UI design breaks this, like fixed-length security code / PIN entry UIs that automatically submit when you enter the last character of the code.
I also tend to memorize long (8+ digit) PINs based on the physical layout of the keys, so if I need to enter a PIN set up on a phone-style keypad on a normal keyboard or numeric keypad, or vice versa, I need to visualize entering the PIN on the original input device to remember it.
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I somes subconsciously correct typos even when not looking at them. It drives me crazy when UI design breaks this, like fixed-length security code / PIN entry UIs that automatically submit when you enter the last character of the code.
I also tend to memorize long (8+ digit) PINs based on the physical layout of the keys, so if I need to enter a PIN set up on a phone-style keypad on a normal keyboard or numeric keypad, or vice versa, I need to visualize entering the PIN on the original input device to remember it.