Notable appearances: Batman: Arkham Asylum, Batman: Arkham City
In the recent Arkham games, one of the tools that Batman is equipped with is the cryptographer sequencer, which allows him to hack into things such as mechanical locks, radios, and computers. All he has to do is stand within a few feet from a terminal, find the right frequency, and within moments the Dark Knight is in full control of whatever he wants in Gotham City.
This gadget comes in handy not only when Batman wants to break into an enemy’s hideout, but when he wants to tap into police scanners and encrypted computer systems as well. Back when the character debuted in the ‘30s, this type of stuff was all done with the most basic of tools, but the cryptographer sequencer is useful for sleuthing in the digital age.