Modifying security state with secured range detection
US11178127B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 2017 |
| Grant date | Nov 16, 2021 |
| Priority date | — |
| Expiry date | Dec 25, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W8/005
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Some embodiments of the invention provide a method for a trusted (or originator) device to modify the security state of a target device (e.g., unlocking the device) based on a securing ranging operation (e.g., determining a distance, proximity, etc.). The method of some embodiments exchanges messages as a part of a ranging operation in order to to determine whether the trusted and target devices are within a specified range of each other before allowing the trusted device to modify the security state of the target device. In some embodiments, the messages are derived by both devices based on a shared secret and are used to verify the source of ranging signals used for the ranging operation. In some embodiments, the method is performed using multiple different frequency bands.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.