Wrist Tattoos Interfere With Apple Watch Sensors

Serenity Caldwell, writing for 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. […]

For those wondering: natural skin pigmentation doesn’t block light the same way artificial ink pigment or even scar tissue does, so you shouldn’t run into a problem if your skin is naturally darker.

★ Thursday, 30 April 2015