A thermoelectric wearable device worn as a ring. (Credit: Xiao Lab)

Wearable technology — any kind of electronic device designed to be worn on the body, e.g., jewelry, accessories, clothing — is becoming more ubiquitous by the day. You can’t walk a block in any city without seeing someone with a fitness tracker or a smartwatch.

Indeed. The global fitness tracker market size alone in 2020 was worth more than $36 billion, and it’s projected to balloon to $114.36 billion by 2028, according to Fortune.

From virtual reality to healthcare, wearables have sped up the future to now.

See how much you know about wearable tech and the progress it has made — and wear your score on your sleeve.