Google presents this free application for Android devices, which allows you to improve the security of your Google account, for products like Gmail, Google Analytics, and more. The Google Authenticator generates verification codes to protect your identity in a 2-step verification.
Installing this application will get extra security for your Google account as well as your regular password. Upon isntalling this, you must enter the unique code generated by your phone. The Google Authenticator has an automatic installation through QR codes, and supports for multiple accounts. This free app for Android is available in several languages.