Now a day, spy cameras and wireless bugs are easily obtain in the market. You can purchase a wireless spy camera or bug at ebay website at a very attractive price.

So, wireless spy camera can be easily install in any places. Specially, at ladies rest room, changing room, etc.  How to detect wireless spy camera and bug in public places?

There are spy camera detector in the market to preform such task.  You can also use a RF meter to do the job.  RF means radio frequency. Wireless device use high frequency signal to send signal to the receiver.  It is always in the range from a few MHz to GHz.

How to make use of a RF meter to detect wireless devices such as spy camera or bug?

First, you must purchase a RF meter.  You can find different types of RF meter in the market.  Look for a digital RF meter with histogram and fast response time if you have budget.  If not, look for RF meter with LED indication.

Common sense you must turn on the RF meter.  Then, point the RF sensor area toward the area you wanted to detect.  Move the meter around and look for the direction with the strongest detected signal strength (use LED, Histogram, or analog bar).  Remember to switch off your mobile/cell phones, because the phone will transmit RF signal to the base station every minutes in the short RF burst, it will be detected and shown by the meter.

Since most of the RF sensor in the meter is single axis type, it can be used to detect the RF signal direction and strength at the same time.  Look around the wall, ceiling, floor, and look for area with high RF signal strength.  The RF meter with fast response time will be able to detect small burst of RF transmission from the SPY Camera, wireless bug.

Once the direction of suspected RF source is found, move the meter toward that direction and look at the Histogram of the meter.  If you RF meter have histogram display, the histogram will show the changes of the RF signal strength when you move around and toward the RF source.  Just follow the strongest signal direction and eventually, you will find the RF signal source (it can be a spy camera, wireless bug..., wireless LAN access point)

These are pictures of some of the RF meters,