biometric_updateApril 29, 2015 — Some users of Apple Watch have reported on YouTube and Reddit that the device does not work properly if you have a wrist tattoo, as the ink seems to interfere with the smartwatch’s infrared sensors that enable wrist detection, according to a report by Business Insider. On a related note, Valencell’s PerformTek biometric sensor technology is able to accurately measure biometric data such as blood flow, in any form-factor and under any condition, including on individuals with tattoos. Read More