Found (Chapter 19)
Honey and i have a bet going, and i have thirty bucks that it's a portable microwave gun that he fires into other's heads in order to change their thoughts!" ulric said.
Jacks Tail: Chapter-12 Safe-House
They started equipping them with surge protection and a band-pass filter last year, or we'd just fry the chip with a microwave gun like we used to do.