Patent attributes
Location information of a client device associated with a credential is determined to be tracked. The credential has been granted to a user of the client device by a credential granting authority to indicate a status of the user with the credential. Known location data that indicates known locations is maintained. The credential data is associated with each of the known locations, and geographic data for each of the known locations. A location of the client device associated with the credential and a particular time associated with the location is determined. A subset of the known location data that defines one or more locations that are known for the credential is accessed from the known location data. The location of the client device associated with the credential is compared with geographic data included in the accessed subset of the known location data.
