Your phone can use tiny skin-colour changes to measure your heart rate

Nature Wednesday 03 June 2026, 00:00 UTC By Benjamin Thompson 1 min read

Key Points

Nature, Published online: 03 June 2026; doi:10.1038/d41586-026-01793-1Passive heart-rate monitoring during regular phone use could provide early warning of health issues — plus, testing Richard Feynman’s solution to the ‘restaurant dilemma’ problem.

Nature, Published online: 03 June 2026; doi:10.1038/d41586-026-01793-1

Passive heart-rate monitoring during regular phone use could provide early warning of health issues — plus, testing Richard Feynman’s solution to the ‘restaurant dilemma’ problem.

doi:10.1038 (ORG) Richard Feynman (PERSON)

Originally published by Nature Read original →

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Your phone can use tiny skin-colour changes to measure your heart rate

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