CrookCatcher is an Anti-Theft Security App that helps you to keep your mobile device safe and secure from intruders and potential theft. It uses your device's camera and captures anyone who tries to unlock your device with the wrong password, pin, or pattern.

The app also sends an email alert with the photo of the intruder and the device's current location. You can also set a custom alarm sound and message that will be displayed when the wrong password is entered.

Overall, this app will ensure that your Android device would not fall into the hands of the wrong people.