Photoplethysmography (PPG)-Based Sensing and Biometric Authentication

Photoplethysmography (PPG)-Based Sensing and Biometric Authentication

PPG measuring blood volume changes corresponding with heart activity
  • PPG measures blood volume changes caused by heart activity.
  • PPG is being used for wearable healthcare devices to measure heartbeats, SpO2, etc.
  • Heart activity is individual specific and can be used as an authenticator
PPG signal (left) and template extractions from an individual and the average (right)

Applications

Usage in wearable healthcare devices
  • Not for instant authentication (at least one heartbeat cycle, ~1 second, needed.)
  • Continuous authentication of the wearer or user for security purpose and/or privacy protection

Current Status

  • Patent pending; work published
  • In collaboration with Dr. Hsiao-Chun Wu (ECE, LSU); on-going research
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