Existing mobile- electronic payment services are rather closed in their structure they are operated by selected entities and are dedicated for certain group of users or transaction types.

The SEMOPS service on the other hand is explicitly open. The service structure itself is based on this principle. The service itself is offered to the banks and mobile operators – the payment processors - who are providing the service to their own clients. This approach means that the actual users – customers, merchants – do not have to centrally register with any third party entity in order to be able to use service. This also means that merchants and customers do not even have to know each other, there is no centralized authentication still the transaction can be performed. Any client of any payment processor can perform payment to any other client of any other payment processor. This is called openness.

To further continue this thought the service is open to new payment processors as well. When one new payment processor joins the service the potential number of transactions increases exponentially, as all existing users will be able to carry out transactions with clients of the new payment processor.