Story perspectives

Revolutionary Wi-Fi Tech Tracks Heart Rates, Raises Privacy Concerns

9/7/2025

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Summary

Story summary

Health devices like Apple Watch and Fitbit track vitals, but a $5 Wi-Fi chip can measure heart rates accurately.
UCSC researchers created Pulse-Fi, which uses AI to analyze Wi-Fi signals for heart rate detection.
WhoFi identifies individuals by examining body-induced changes in Wi-Fi signals, achieving 95.5% accuracy.
WhoFi generates unique biometric signatures from Channel State Information (CSI), surpassing traditional camera systems.
The technology poses privacy concerns, enabling tracking without consent, with potential applications in hospitals and restricted areas.

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Story summary

Health devices like Apple Watch and Fitbit track vitals, but a $5 Wi-Fi chip can measure heart rates accurately.
UCSC researchers created Pulse-Fi, which uses AI to analyze Wi-Fi signals for heart rate detection.
WhoFi identifies individuals by examining body-induced changes in Wi-Fi signals, achieving 95.5% accuracy.
WhoFi generates unique biometric signatures from Channel State Information (CSI), surpassing traditional camera systems.
The technology poses privacy concerns, enabling tracking without consent, with potential applications in hospitals and restricted areas.