The inconspicuous lock hacking device is an adaption of one demonstrated at the Black Hat security conference in July by Cody Brocious, a hacker and software developer for Mozilla, who discovered and exploited a vulnerability in Onity locks, a cheap and popular hotel room lock that the company says are used on at least four million hotel rooms worldwide.

FORBES: Hackers Crack Hotel Room Locks With A Tool Disguised As A Dry Erase Marker

They're breaking into and hacking the company's latest must-have device.

NPR: iPhone's Release Prompts Code-Cracking Frenzy

HAMMOND, 27, of Chicago, Illinois, is charged with one count of computer hacking conspiracy, one count of computer hacking, and one count of conspiracy to commit access device fraud.

ENGADGET: Top LulzSec members arrested, group leader reportedly acted as informant