Patents
US 12619838 B2: Systems and methods for verifying remote device proximity in RFID systems
- Granted
- 2026-05-05
- Filed
- 2024-12-06 application 18972153
- Type
- Utility · 18 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Systems and methods for verifying remote device proximity in RFID systems are described. To reduce the risk of relay attacks, a terminal may determine a distance of a remote device from the terminal. The terminal may send a computational challenge to the remote device and determine whether a latency of the response is within a maximum acceptable latency, indicating that the remote device is within a maximum acceptable distance. The maximum acceptable latency may be dynamically determined based on context information, such as a time of day, that may be correlated with a likelihood of attempted unauthorized accesses. The terminal may determine whether to perform an action associated with the remote device based on whether the response was received within the maximum acceptable latency.
Source: PTBLXML, file of 2026-05-05 (ipgb20260505.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| CenturyLink Intellectual Property LLC 1,025 patents | US company or organization | Denver, CO | PTBLXML, file of 2026-05-05 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| John R.B. Woodworth | Amissville, VA | 47 | PTBLXML, file of 2026-05-05 | |
| Dean Ballew | Sterling, VA | 48 | PTBLXML, file of 2026-05-05 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| G06K | Graphical data reading ; presentation of data; record carriers; handling record carriers | G06K7/10257 | PTBLXML, file of 2026-05-05 |
| G06F | Electric digital data processing | G06F21/554 | PTBLXML, file of 2026-05-05 |
| B60R | Vehicles, vehicle fittings, or vehicle parts, not otherwise provided for | B60R25/2072 | PTBLXML, file of 2026-05-05 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2024-12-06 | Assignment Assignment of assignor's interest | WOODWORTH, JOHN R.B. signed 2024-11-24 BALLEW, DEAN signed 2024-11-25 | CENTURYLINK INTELLECTUAL PROPERTY LLC DENVER, CO | 69513/478 | PASDL, file of 2026-10-15 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.