The "Pair & Pay" feature allows you to use Curb to pay for a taxi ride you hail on the street. When you get in the cab, tap the "Pair & Pay" button. You will be prompted to enter the 7-digit code that appears on the screen in the backseat of the cab. Once pairing is successful, your payment will be processed automatically at the end of the ride, just like a Curb ride you book with the app.
At this time "Pair & Pay" may not be available in all vehicles, and is not available in all cities. If you do not see the Pair & Pay option in the app, you are in a location where this option is not currently available. You should pay your driver using cash or with a credit card swiped in the taxi at the end of the ride.
Please note that it is possible to see a pairing code in the cab and no option to Pair & Pay in the app, as Curb is not the only service that uses pairing codes and pairing is not available for Curb in all markets.