I have often wondered if it would be possible to make a simple game of typing 3 or 4 digit sequences (similar to the dactylo typing games like "type the words before they fall to the bottom of the screeen"), and then find out if PIN code subsequences or digit transitions have a distinct timing pattern. If possible it would be very creapy if it would imply browser based games, or a keylogger, or your employer could extract your pincode from enough typing material (say in some spreadsheet)...
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I have often wondered if it would be possible to make a simple game of typing 3 or 4 digit sequences (similar to the dactylo typing games like "type the words before they fall to the bottom of the screeen"), and then find out if PIN code subsequences or digit transitions have a distinct timing pattern. If possible it would be very creapy if it would imply browser based games, or a keylogger, or your employer could extract your pincode from enough typing material (say in some spreadsheet)...