No matter where I stay when I'm on vacation, I ALWAYS check for hidden cameras. Folks have called me crazy, but it's happened more than once to people. Once is enough for me to stay on guard and CHECK. It takes no time at all to check, and I am always a "rather safe than sorry" person. They're usually placed in devices like fire alarms, smoke detectors, or digital clocks. You can do your own detective work by shining your cell phone's flashlight at certain spots of the device. If there's a camera lens inside you'll see a blueish reflection. Watch the video below to learn more!