System and method for controlling devices using short message service via a relay device
US10785364B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 16, 2019 |
| Grant date | Sep 22, 2020 |
| Priority date | — |
| Expiry date | Jul 16, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/0442
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Described are systems and methods for responding to a lost-mode command directed to a target wireless device from a server to alter the functionality of the device, such as to restrict access to sensitive data. A relay device is selected at the server to act as intermediary between the server and the target wireless device. An encrypted message with both the lost-mode command and the relay-device phone number is relayed to the target wireless device. The target wireless device decrypts and parses the message to extract the lost-mode command and the relay-device phone number. To authenticate the relay device as the intended sender of the lost-mode command, the target wireless device compares the phone number of the message sender to the relay-device phone number specified in the message. The target wireless device disregards the lost-mode command if the sender's phone number does not match the relay-device phone number, and otherwise enters a “lost mode.”
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.