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The ttkMobile app scans and authenticates tickets, providing validation, fraud protection and tracking. In particular, it works in the transport industry, supporting the RSP Type 6 standard, used within the UK Rail network. These tickets are in common use by several Train Operating Companies. Tickets are issued by, for example, Whilst ttkMobile works “offline”, in order to function without an internet connection, it makes frequent requests of the TTK Server, from which it sends and receives ticket information to synchronize all devices working within a single operation. It also receives network and security information from the server. For further details, refer to, and to create sample tickets with which to test the app, go to