OpenCV Manager needed . If not installed, the application will ask download.

Instructions:  It takes at least two faces saved so you can begin to recognize   Training Mode: Write the name of the person, focus and when it begins to appear a box locating a face press "Rec". Press Rec repeatedly to store different gestures

  Find mode. Focus on one face and if recognized, its name appears. An icon will appear green, yellow or red depending on the degree of confidence in recognizing Button "View All": See the faces stored.

+ Version 2.2: Storage moved to internal storage.

Source code: https://github.com/ayuso2013/face-recognition