> The merchant doesn't see your real cc number, just a one-use token It's worth noting that the token is one-per-vendor, rather than one-per-payment. This is w

> The merchant doesn't see your real cc number, just a one-use token It's worth noting that the token is one-per-vendor, rather than one-per-payment. This is what allows TFL to match your tap-in to your tap-out on the London Underground, and what allows them to apply daily/weekly capping on fares.