摘要 |
A credential can be shared by one user with other users when sharing conditions are met. Sharing conditions can include a time, time range, date, date range and the geographic location of a user with whom the credential is to be shared. The credential can be shared so that it is not visible or accessible in plaintext to the shared-with user. Sharing conditions can include conditions that, when met, result in the revocation of a shared credential. |