Israeli Device Detects Cell Phones Acting as Bugs: ‘With a slight modification, cell phones become high-quality bugs. An owner can call the phone from anywhere in the world without it emitting a ringing tone while its screen remains blank, apparently turned off.

“The beauty of the cell phone as a bug is that it’s an innocent looking and ubiquitous object,” said Ben Te’eni, co-founder of Netline Communications Technologies, which has developed a device for detecting cell phone communications, especially from cell phones in apparently dormant mode.’ Yahoo! News