This app works on a simple logic that if someone is trying to unlock your phone by guessing your password/pattern/pin, then there are high chances that there will be wrong attempts.
This app will not only capture the intruder selfie, but it will also ring an alarm, blink your mobile phone flashlight, and vibrate your phone. So if the intruder is near you, then you will come to know about it.
To solve this problem, all you have to do is install the Alarm on Wrong Pattern app on your phone, and it will help you in catching intruders and thieves.