User identification system based on plethysmography
US9668676B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 30, 2013 |
| Grant date | Jun 6, 2017 |
| Priority date | — |
| Expiry date | Dec 30, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/28
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A light emitter and light sensor pair can be used to determine one or more characteristics of a user's vasculature. For example, a pulse oximeter employs a light emitter and a light sensor to measure the percentage of oxygenated blood in a subject. In examples of the present disclosure, light emitters and light sensors can be used to perform biometric identification of a user based on identifying characteristics of the user's vasculature. For example, light information can be obtained at one or more light sensors, and the information can be compared to stored information associated with a user identity. Based on the comparison, the user of the device can be identified as having the user identity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.