Abstract: In a wireless communications network, a system is provided for securely executing the transfer of rights between holders of accounts. The secure transfer of messages may represent the exchange of title to monetary assets. Each title holder is provided with a SIM card containing a transaction application that can interpret menu messages, accept user inputs and generate transaction messages for processing by the system. Each of the menu and transaction messages is delivered as a short messaging service message. The holder inserts his SIM into a mobile handset, and (after authentication with the system) is permitted to interact with the system to conduct rights transfer transactions. Since the transactions are in the form of simple text messages, the mobile handset need not conform to a high specification (i.e. may not support GPRS).