Kwalyo, dba CarPay-Diem, is a platform allowing any mobile app or connected car to activate any fuel pump and manage the payment from inside the car. The driver experience is very simple: When the car arrives at the fuel station, the smartphone (or car display) automatically switches on and asks for the nearest pump number. The driver is then invited to take fuel. When he places the nozzle back, the transaction receipt appears on the screen. CarPay-diem has managed the payment and the loyalty. In the meantime, the fuel station has sent a targeted commercial offer to the driver to encourage him to enter the shop and buy something more on top of fuel.