| http://www.w3.org/ns/prov#value | - There are many different ways of authenticating but they all come down to a person having something only they know (e.g. a password) or something unique they ???are??? (like physical characteristics, i.e. a fingerprint or other biometrics), which they communicate to the Service Provider via the cloud to prove his or her ID. This lets them access the relevant service.
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