4 ms·I believe most banks stop sequence numbers such as "1234", "9876"by vorticalbox 4y agoI believe most banks stop sequence numbers such as "1234", "9876"cuteboy19 4y agoLess work to do for the hacker, how kindthfuran 4y agoMarginally reducing the search space to prevent significant clustering probably is beneficial.sgjohnson 4y agoThey probably do, but those still are valid PINs, that some banks probably don’t block.