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.