1. How People Use Their Deviceshttps://storage.googleapis.com/think/docs/twg-how-people-use-their-devices-2016.pdf
2. Two-factor face authentication using matrix permutation transformation and a user password
3. Face Description with Local Binary Patterns: Application to Face Recognition;Shafique;Int. J. Adv. Comput. Sci. Appl.,2017
4. Biometric Recognition: Challenges and Opportunities;Pato,2010