In online commerce, the virtual cash register is called a checkout.
At checkout, the customer selects the payment method and enters his address data for delivery. Usability research has shown that this is where most purchases are abandoned. Reasons for this can be the shipping and delivery conditions, cumbersome forms, mandatory registration or unsuitable payment options. Simple handling of the checkout is especially important on mobile devices.
To keep the abandonment rate as low as possible, the checkout should be optimized. This includes ensuring that the payment methods offered cover as broad a spectrum as possible. The customer can then decide for himself which payment method he chooses and which is the most suitable for him. The customer should also be informed about where he is in the checkout process and how many steps he still has to take before completing the purchase. Too many input fields should be avoided at all costs, and the input form should be kept as short as possible.