How do credentials work?
User IDs and passwords are the most common form of credential. The end user enters both his user ID and his password. The system compares the information presented to the information it has on record, and if they match, the end user is allowed access to the system. Different types of credentials work in different ways but the end user must demonstrate some knowledge that only the end user should have, such as being able to correctly enter the secret password in order to establish his electronic identity.
