Our pals at iFixit have scored a pretty sweet scoop with this photo-exposé of the guts of an official FBI bumper-beeper.

We partnered with Wired to bring you a peek inside an FBI car-tracking device. The device is similar to the one Yasir Afifi found underneath his car. If you’re curious where this one came from, Wired has posted a writeup about Karen Thomas, the woman who found this tracker under her car. They’ve also posted a video of Kyle doing the teardown.

The device comprises of a GPS unit for receiving the car’s position, an RF transmitter for relaying your location to the interested authority (aka the FBI), and a set of sweet D-cell batteries that power the whole enchilada. But we didn’t stop there, of course. Read on to find out exactly what components make this secretive device tick.

[Thanks, Kyle!]