Facebook is expanding its support for hardware security keys to Android and iOS users. Physical security keys are a more secure option for two-factor authentication (2FA) than SMS (which is vulnerable to SIM swap attacks and phishing), and apps that generate codes or push notifications (which are also vulnerable to phishing) Facebook will now let you authenticate yourself with a password (something you know) and a hardware security key. Hardware security keys connect to your device via USB-A, USB-C, Lightning, NFC or Bluetooth.”]