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- There are a few standard credential types like ISO 18013-5 mobile driver's license or W3C Verifiable Credentials.
- Smartphone are available that can securely store credentials and proof the holder's presence and ownership of the credentials.
- There are wallet apps that can required mobile credentials and release only that information that is needed for the user purpose.
- The purpose of the access can be specified or determined by the user.
- The purpose will determine the data required by the user. (This is the definition of purpose for this user story.)
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