Google Lets You Securely Sign Into Your Account Using A QR Code
An experiment by the search company allowed users to remotely log into their accounts by scanning with their smartphone.
Recently, Google tested out its ‘Sesame' experiment that allows users to sign into their accounts on public computers without having to type in their login details. Users simply point the computer's browser to accounts.google.com/sesame and read the on-screen QR code with their smartphone. After your mobile browser logs onto your Google account, you can give permission for the computer browser to automatically log in without having to type anything.
In theory, logging on with your phone is much more secure on a public computer than physically typing in your private information. The idea behind Google Sesame is that it prevents keyloggers from stealing your username and password.