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Magnetometer feature need to have magnetic sensor in your phone, other wise this feature will not work.

How to use this app. How to find camera ?
Move app near to any device that you have doubt. For example - shower, flowerpot, lens looking part or changing room mirror.
This app analyse the magnetic activity around the device. If magnetic activity seems similar to that of camera, this app will beep and raise alarm for you so that you can further investigate.
You have to move app facing your sensor towards the object.To know sensor position of your phone, have any camera and move nearby top of your phone and bottom of your phone. When it beeps, you find the sensor position

Infrared camera detector  - This app has one more tool which is detect infrared lights.Just open the infrared detector and scan for white light that appear on screen but not visible by naked eye. Such white light indicate infrared light.It could be infrared camera. Your normal cam can also detect it but what we have is inbuilt feature with luminescence effect.

What less, get some easy techniques that can save you from potential exposure to hidden camera.
You can share the location with friends easily if you find the camera so that they can take precaution when they visit this place.
 If app crashes, for Infrared detector, please close other camera apps and try again. 
Do rate us and for any issues write to futureappstech@gmail.com

FAQ
My phone does not have magnetic sensor  -
This app analyse magnetic activity based on readings from magnetic sensor of your android device. If this sensor is not available, you can only use infrared detector feature. Other way is you can try on some other device having magnetic sensor.
App beeps near metal or electronics  -
This app is not designed to detect metals. Metals are good conductor for electricity so they have electromagnetism but it is very weak and app is designed to ignore it.
But sometimes, some type of metals depending on their length, material, temperature may exhibit same magnetic activity as that of camera. In that case app may beep. If so always look for lens on the suspect if app beeps. 
What do I do if it beeps near metal  -
Check if there is any lens on the suspect. If not, then you are secure. if you find lens like object, then there should be hidden camera.
Infrared detector is just a fancy green tool of normal camera. Normal camera can also detect infrared
You are partially-correct. Along with this, infrared detector have luminescence effect to glow white light. If you feel better with normal camera, go for it. We never claimed something false. But please give credit to the app if you never knew IR camera can be detected using digicam. And off course, its a quick scanning feature within the app.
App does not open Infrared camera detector. It shows not responding
Please kill all other camera apps that are running in background.

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