Smart wear, also known as wearable devices, is a general term for the application of wearable technology to carry out intelligent design for daily wear and develop wearable devices, such as glasses, gloves, watches, necklaces, bracelets, clothing and shoes.

The advent of the era of wearable intelligent devices means the extension of human intelligence. Through these devices, people can better perceive the external information and their own information, process information more efficiently with the assistance of computers, networks and even other people, and realize more seamless communication. Application areas can be divided into two broad categories, namely, self-quantification and in vitro evolution.