Authenticators are used to verify the identity of a person or a thing. Authenticators can be passwords, security codes, or biometric data like fingerprints or retinal scans. Other synonyms for authenticators include verifiers, authentication mechanisms, credentials, validators, identification systems, and access controls. These tools are often used in security measures to ensure that only authorized individuals or devices can access sensitive information or perform actions. Authenticators can be physical devices like smart cards or USB keys, or software-based solutions like two-factor authentication or multi-factor authentication. The use of authenticators is becoming increasingly important in today's digital age, where cybercriminals are always looking for ways to exploit vulnerabilities.