It is extremely easy to pay for something using a smart device such as a watch. Just hold the device within 5 cm of a contactless payment terminal to validate the transaction. Communications between the payment terminal and the smartwatch use a special radio frequency. Encrypted banking information stored in the smartwatch passes between the two devices very quickly, and the payment process is triggered.
What are Garmin Pay and Fitbit Pay? How do I pay for my purchases with Fitbit Pay or Garmin Pay?