Tattoos Befuddle Apple Watch’s Pulse Oximetry Sensor #WearableWednesday

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Will an arm sleeve tattoo prevent you from wearing the Apple Watch? Article on iMore:

Recently, we’ve been hearing reports from Twitter and Reddit that the Apple Watch’s plethysmograph sensor plays not-so-nicely with wrist or arm sleeve tattoos. The ink pigmentation interferes with the sensor’s ability to read your heart rate — and with it, the Watch’s ability to assess whether or not it’s maintaining skin contact.

After some brief tests, we’re inclined to agree with those early reports — if your tattoo happens to be a solid, darker color. This is has to do with the way Apple measures your heart rate.

We also found a pulse oximetry sensor when we took apart the Moto 360 — check out the teardown to learn more!

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