olemus
autentimistegur mingi salateabe (näiteks parooli) kujul,
st aluseks on miski, mida autenditav teab
=
a category of credentials used for authentication, knowledge of certain confidential information

ülevaateid
https://en.wikipedia.org/wiki/Multi-factor_authentication

https://www.pearsonitcertification.com/articles/article.aspx?p=1718488

vt ka
- isikuteadmusega autentimine
- kohategur
- mitmikautentimine
- olemustegur
- omamistegur