Privacy in the age of the smartwatch

Heart rate. Blood pressure. Sleep measurements. Blood oxygen levels. Once upon a time, these measurements were usually only taken at a hospital or clinic, but with the rapid adoption of smartphones and smartwatches, this data has become widely available with the touch of a button. The ubiquity of these tools has made it easier than ever to capture long-term data about a person's health, and doctors, researchers and tech companies are all taking notice.

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