| 摘要 |
<p>A mobile communication system comprising a multiplicity of mobile devices, and a server communicating with the mobile devices via a communication network, and a central database which is in data communication with the server and which is operative for storing sensitive data encrypted using at least one key, at least a portion of which is provided, only on certain occasions, by an individual one of the mobile devices and is not retained between the occasions by the central database.</p> |
