Understanding claims
Before we define what a claim is, we need to talk about identities. We can say that identity is a set of information that can uniquely identify anything and contains information about the subject's relationships to other entities. Identities, in general, are verified by using a trusted source of information. We can say a digital identity is a set of information to identify a person.
Now that we have defined the term identity, we can discuss a few examples about claims in the real and technical world. In general, claims are statements about an identity:
Passport: It is a common example; if you want to fly, you need to show your passport that contains information such as your name, address, date of birth, and a biometric photo. Each item is a claim made about you by the country issuing your passport. Your country ensures that the information in your passport is correct and can be trusted by other countries.
Bartender: In theory, he should check if you are of the required...