Google Authenticator - APK, Download
Google Authenticator is Google's application for two-step authentication. Getting started is very easy. When you try to authenticate with a Google Account on your device, you will be prompted to enter a unique password which has also been generated by Google Authenticator. Of course, these keys expire.
Typically, you use Google Authenticator to identify yourself to Google services. However, there are other apps and services that use this feature to perform this two-step check. It is therefore one of the applications that can be safely installed on the terminal.