authentication
/ɔːθɛntɪˈkeɪʃ(ə)n
/noun [mass noun]
1The process or action of proving or showing something to be true, genuine, or valid: the prints will be stamped with his seal and accompanied by a letter of authentication [as count noun]: the authentications were both carried out by the Investigation Bureau of the Ministry of Justice...
- They have announced the authentication of a miracle attributed to the Albanian-born nun.
- Stamped in red ink in a vertical line down its center was the check's authentication: ORIGINAL.
- His reputation was ruined by his authentication of a forged 60-volume diary.
1.1 Computing The process or action of verifying the identity of a user or process: user authentication for each device ensures that the individual using the device is recognized by the company [count noun]: passwords and authentications are necessary parts of system security...
- Users can update applications securely with authentication enabled through digital signatures.
- The system has a large range of authentication options.
- Secure login authentication should be employed to keep out unwanted visitors.