This chapter presents different types of authentication methods used in Android mobile devices. This chapter will help readers choose the proper authentication method for their mobile application.

First, you will learn about multifactor authentication and the different authentication factors, such as the knowledge factor, the possession factor, and the inherence factor. You will then learn how to make your own implementation of a login system for your Android application. You will also learn about authenticating different services using AccountManager.

The topics that will be covered in this chapter are: