Wearable technology, wearables, fashion technology, smartwear, tech togs, skin electronics or fashion electronics are smart electronic devices (electronic device with micro-controllers) that are worn close to and/or on the surface of the skin, where they detect, analyze, and transmit information concerning e.g. body signals such as vital signs, and/or ambient data and which allow in some cases immediate biofeedback to the wearer.[1][2][3]

Wearable devices such as activity trackers are an example of the Internet of Things, since “things” such as electronics, software, sensors, and connectivity are effectors that enable objects to exchange data (including data quality[4]) through the internet with a manufacturer, operator, and/or other connected devices, without requiring human intervention.