Answer:
1. Requiring a Token or Authentication Code
2. Requiring Biometric Authentication
Step-by-step explanation:
1. Requiring a Token or Authentication Code: This method requires users to provide an additional form of verification (usually a code sent to their phone or email) when logging into a system.
2. Requiring Biometric Authentication: This method requires users to provide biometric data such as fingerprints, a retinal scan, or voice recognition when logging into a system. This data is unique to each individual and provides an extra layer of security.