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Latest Research
View all research → Validation
Estimating Sleep From a Smartphone Alone: A Validation Against Wearables on 105,826 Nights
Sugam Budhraja
Using only what a phone already records, with no location, microphone or wearable, a passive estimator placed sleep onset and wake within an hour of a consumer wearable on two nights in three, and a week's average sleep timing within 15 minutes. This paper shows which design choices produce that.