In mobile telecommunications technology, the concept of Mobile Signature Roaming means an Access point (AP) should be able to get a Mobile Signature from any enduser, even if the AP and the enduser have not contracted a commercial relationship with the same MSSP. Otherwise, an AP would have to build commercial terms with as many MSSPs as possible, and this might be a cost burden. This means that a Mobile Signature transaction issued by an Application Provider should be able to reach the appropriate MSSP, and this should be transparent for the AP.
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Mobile Signature roaming itself requires commercial agreements between the entities that facilitate it. In this respect, we assume that various entities (including MSSPs) will join in order to define common commercial terms and rules corresponding to a Mobile Signature Roaming Service. This is the concept of a Mobile Signature Roaming Service.