They’re a suspicious bunch over a Chinavasion. People must spend all day checking their desks for bugs and GPS units stuck under their cars. Now you can listen through walls too with the Inspector Gadget Listening Device. It’s helpfully shaped like a tin can, complete with in-ear phones and will amplify sounds through doors and walls. Adjustable volume control and recharges via USB. US$55.95
This spy audio gadget works by amplifying the vibrations of audio. When people are talking in a room their voices are simply a waveband, and depending on how loud they are talking, the waveband travels short and long distances which are picked up and amplified by this device.