Clocks, Falkenberg said, may carry cameras inside. If you look closely, Falkenberg said, you can see the camera. And these cameras aren't rigged this way. You can buy them online, and they have nightvision capabilities and motion detection. To avoid being taped with an electronic device like this, Falkenberg suggested bringing your own electronics to hotels and removing as many as you can that you don't need. Also, if there are two smoke detectors in a room Falkenberg said something may be very wrong. A smoke detector, he explained, can give a 360 degree view of the room, and more than one camera may be stashed away inside.

When in doubt, cover with duct tape ...