Here is a design flaw that nobody in the wearable technology industry wanted to talk about. The sensors in your smartwatch, fitness tracker, and health monitoring device work by reading electrical signals from your skin. Older skin is drier, thinner, and more textured — with more wrinkles and surface irregularities that create gaps between the sensor and the skin beneath it. The reason is how conventional wearable sensors are built. The Industry’s Quiet Bias ProblemMSU’s findings sit alongside a growing body of evidence that wearable technology has a design bias problem that goes beyond age.