Do a physical search of the premises.
This involves a slow, meticulous sweep of the room or building you suspect is wired.
Look around for anything that seems different or out of place, such as flower arrangements, pictures on the wall out of level or in unusual areas, or lampshades that don't look normal.
Check for smoke detectors you didn't add, look for a speaker that might have a camera in it.
Look inside flower pots, light fixtures, and other places where a microphone transmitter can easily be hidden.
Look under couch cushions, table tops, and shelves. Underneath shelves and table tops are excellent places for miniature cameras.
Look for wires that do not seem to go anywhere, such as an appliance or other familiar device. "Hardwired" (that is, not wireless) spy equipment is less common with modern technology, but is still used for permanent surveillance in commercial businesses for loss prevention.
Listen as you walk the entire room quietly. Many small, motion-sensitive cameras make an almost inaudible click or buzz when they operate.
Use Darkness
1 Turn off the lights and look around for tiny red or green LED lights. Some microphones have "power on" indicator lights, and if the person who sets it up is careless they may fail to cover or deactivate this feature.
2 While the lights are off, grab a flashlight and carefully examine all mirrors. These can be made transparent from one side so that a camera can see through, but they rely on the observer's side being darker than the area observed in order to keep the other side of the mirror reflective.
3 Search for pinhole cameras in the dark. A pinhole camera might have a charge-coupled device (CCD) sitting behind a tiny opening in a wall or object. Get an empty toilet paper tube and a flashlight. Put the tube over one eye like a telescope and close your other eye. As you sweep the flashlight over the room, pay attention to any small glimmers that reflect back at you.
Use a Signal Detector
1 Buy an RF signal detector or other bug detector. If you seriously believe you are being spied on, buy an RF (radio frequency) detector and do a sweep of your room, building, or home. These portable devices are small, simple to use, and fairly inexpensive. However, there are bugs that use multiple frequencies in rapid sequence called "spread spectrum" that an RF detector will not pick up. These bugs are used by professionals and require a spectrum analyzer and an experienced technician to find.
2 Use your cell phone to pick up an electromagnetic field. Place a call on your cell phone, then wave the device around where you think there might be a camera or microphone. If you can hear a clicking noise on the call, it means your phone might be interfering with an electromagnetic field.
Check hotel rooms.
Make sure that your computer's microphone and webcam (if you have one) are off or covered when not in use.
Wireless surveillance devices will be a bit larger, because they contain wireless transmission equipment. These devices can send information in about a 200-foot (61-meter) radius.
If you find something, alert the authorities. Don't move or disable the camera or microphone. Act as if you hadn't noticed it, go just outside the bugged area and call your local law enforcement agency. They'll want to see evidence that the bugs were installed, and not just lying around the room.
For stealthy sweeps, hide the RF detector and make sure it's on silent mode.
Don't let the cameras and mics know you're looking for them.
How to Tell if a Mirror Is Two Way or Not ?
Have you ever had that feeling that somebody is watching you your workplace, or in dressing rooms, hotels, or some other place where you should have privacy? If there's a mirror there, it's possible it could be a two-way mirror—a mirror that is reflective on one side (the side you see), and transparent on the other (the side that's observing. It can be a creepy feeling, not knowing if you're being peeked at, but it's easy enough to tell if you're reflection is somebody else's view. Here's how to do it:
Try the fingernail test. When you touch your fingernail to the mirror, you will normally see a gap between the transparent outer glass, and the mirrored inner glass. First surface mirrors (where you'd see no gap) are very expensive to produce, so most mirrors have the reflective surface behind a layer of glass (second-surface mirrors).
If you see a gap, you can rest assured that your privacy is intact.
If you don't see a gap, don't get too excited—yet. The fingernail test can be affected by lighting, size of the mirror, and your own perception. However, if there's no gap, you can perform additional tests to make sure.
Observe how the mirror is installed. A normal mirror is hung against the wall, but an transparent mirror is set into the wall. If there is wall is behind the mirror, it's a good bet that it's nothing more than a regular mirror.
Shine a light on it. If you're still not convinced, turn off the lights, then hold a flashlight to the mirror (it can even be the "flashlight" on your smartphone). If it is a two-way mirror, the room on the other side will be illuminated.
See for yourself. Press your face up to the mirror and cup them with your hands, creating a dark tunnel to block out as much light as possible. When you do this, if the light in the observation room is at all brighter than the light on your side of the mirror, you should be able to see something beyond the glass.
Sound it out. Tap on the surface of the mirror with your knuckle: a normal mirror will produce a dull, flat sound because it is placed in front of a wall. An observation mirror, however, will produce an open, hollow, and reverberating sound, because there is an open space on the other side.
(P.B - contents from various websites, for the required purpose)
However apart from all this, safety is in your hands. The time you move out of the house you need to be alert and resourceful to help oneself and others. Here presence of mind is all what you need.
Some handy tips are:
- be alert by the non verbal gestures and postures
- always to have some safety devices
- mostly avoid using trial rooms
- be careful if you are prompted for a trial
- always accompany a lady with you in a trail room for the required purpose.
- for the exact measurement compare the new and the old clothes you wear, for your convenience.
