Face recognition can be applied for a wide variety of problems like human-computer recognition, criminal detection, image processing, film processing etc. Face detection is a difficult and challenging task so the authors need some real time application to detect the criminals around them. In order to do so they thought of implementing Eigen faces algorithm which was developed by the researchers. Police do not have any real time application which can detect criminals if the real time video is playing. So they have to make an android application available to them on their android phones.