Digitisation or tokenisation involves replacing the number of the physical bank card with one for the digital card in compatible smart devices, such as Fitbit or Garmin smartwatches. This digital card number is the one transmitted to retailers and online merchants, which means they do not have access to your real card number. Visa is the only company able to link your digital card number and your real card number.
How do smartwatch payments work? What are Garmin Pay and Fitbit Pay? How do I pay for my purchases with Fitbit Pay or Garmin Pay?