Wearables don’t work the same on dark skin. It’s time to change that
Ever since wearables equipped with heart rate tech began entering the mainstream, there have been questions about the accuracy of optical heart rate sensors when taking readings on different skin tones. From Apple’s infamous so-called “tattoogate” shining a green LED light on the problem in 2015 to various academic studies during the years that followed, there has been a lot of discussion, but not a lot of conclusions. What happened? Have sensors changed to cope with different skin tones, or has the industry failed to change?...