: Facebook sometimes uses facial recognition technology to compare a video selfie or ID photo against your existing profile pictures for quick verification.
If Facebook detects unusual activity, such as a login from an unrecognized device, they may require a security check to confirm your identity. facebook log in identity
: You might be asked to provide a code from a third-party authenticator app (like Google Authenticator), receive an SMS code, or use a physical security key. : Facebook sometimes uses facial recognition technology to
: In some cases, you must upload a government-issued ID (e.g., driver’s license or passport) to regain access or run certain types of ads. receive an SMS code