Patent 12081989 was granted and assigned to Trustonic Limited on September, 2024 by the United States Patent and Trademark Office.
An authentication method and terminal device obtain a device identifier associated with an electronic device and receive an Integrated Circuit Card Identifier (ICC ID) of a Subscriber Identity Module (SIM) of the electronic device. A group of IDs is cryptographically signed with a device key of the terminal device or a key derived from the device key. The group of IDs may comprise the device identifier and the ICC ID.