There are provided measures for enabling self-checkout with mobile payment, such as in a self-checkout fastlane with cashless and cardless payment by a mobile payment service in a retail shop. Such measures could exemplarily include a self-checkout system comprising: a proximity device configured to detect or get detected by a mobile device of a user of a mobile payment service in the proximity of a point-of-sale of a shop supporting the mobile payment service, wherein the user of the mobile device is a customer, a cashier system configured to automatically recognize shopping items of the customer when approaching and/or passing the cashier system, and to generate shopping information, including at least one of a shopping basket content and a total amount of the recognized shopping items, and a server device configured to confirm payment of the recognized shopping items of the customer by the mobile payment service upon matching between a first transaction identifier, which is generated by the server device on the basis of the shopping information received from one of the proximity device and the cashier system, and a second transaction identifier, which is delivered by the mobile device and received from the mobile device or the one of the proximity device and the cashier system, and to supply a payment confirmation at least to the one of the proximity device and the cashier system.