Google adds a new security key to Gmail and other Google services. The key is a physical USB-based second factor sign-in component that only works after verifying the login site is truly a Google site. The move comes a day after Apple launched its Apple Pay platform, a wireless payment system that takes advantage of the near-field communication (NFC) technology built into the new iPhone 6, which allows users to pay for stuff at participating merchants merely by tapping the phone on the stores payment terminal.”]
Source: https://krebsonsecurity.com/2014/10/google-accounts-now-support-security-keys/