The r7Connect App Enablement allows external web apps to be integrated directly into the cash register surface. These can communicate with the cash register via an API as well as access external web services. This allows functional extensions to be made very quickly without intervention in the core system. The web apps can provide the operator with additional functions or practical applications directly at the point of sale. Examples include customer and context-specific product recommendations, extended product information or the process-oriented integration of third-party systems.