Security researcher Brendan O’Connor is building a sensor-equipped surveillance-capable computer that’s so cheap it can be dropped from a drone and sacrificed after one use, with off-the-shelf parts that anyone can buy and assemble for less than $50.

The F-BOMB (Falling or Ballistically launched Object that Makes Backdoors), built from just the hardware in a commercially available $25 PogoPlug mini-computer, a few tiny antennas, 8GB of flash memory, and some 3D-printed plastic casing, the F-BOMB serves as 3.5x4x1 inch spy computer.

It can be plugged inconspicuously into a wall socket, thrown over a barrier, or otherwise put into irretrievable positions to quietly collect data and send it back to the owner over any available Wi-Fi network.