FIDO Alliance Authentication
Other tech companies in the group include Amazon, Facebook, Google, and Microsoft. The members are working to develop a new authentication standard called Universal 2nd Factor (U2F). This is an open standard to improve regular two-factor authentication with NFC devices and USB devices, like YubiKeys.
These security devices are more secure than SMS authentication or apps that generate one-time authentication passcodes. Those tools are two-step verification. But with true two-factor authentication, the second factor is a separate device.
Browsers that support U2F include Chrome, Edge, Firefox, and Opera. Apple added support for FIDO2 security keys with Safari 13 and WebAuthn.