Remote Hacking Device

The Remote Hacking Device a new gadget succeeding the Cryptographic Sequencer, which aids the Dark Knight with manipulating electronic devices and peripherals alike in Batman: Arkham Knight.

Batgirl: A Matter of Family Incident
The Remote Hacking Device appeared in this prequel storyline as a part of Batgirl's Utility Belt and was one of her primary gadgets. While it functioned similarly to how its future counterpart handled, it also appeared to be far more advanced then Batman's version as it was capable of running machines that Batman's couldn't such as cranes, and was able to use certain objects in more than one way. While it was never stated, it was implied that Batgirl herself was the inventor of the device for her own use in the field. Another possible explanation is that Batgirl's hacking skills are simply superior to Batman's, allowing her to use the device in more ways than he could.

Batman: Arkham Knight Incident
Batman obtains the Remote Hacking Device from Lucius Fox at Wayne International Plaza after destroying the Watchtower that protected the Stagg Enterprises Blimp. The device does everything which the Cryptographic Sequencer did, and it could also blind enemy drones, tilts the Stagg's Airship, detonates nearby electronic equipment to incapacitate enemies. It can no longer tune to radio frequencies, but instead boasts a much longer effective range.

Trivia

 * The Remote Hacking Device has items that can be instantly opened by it without using a password.
 * There is never a door that the Remote Hacking Device can't open without a trap risk or a timer on them or more than 1 password required (such as Joker's Smilex from Batman: Arkham Asylum).
 * Batman doesn't start with Remote Hacking Device in the Batman: Arkham Knight, similar to how he doesn't start with the Cryptographic Sequencer in Batman: Arkham Asylum.