Improved techniques for validating timestamps used in a client-server environment are disclosed. A client can associate client-provided timestamps with events that occur at the client. The client can then send event information as well as the timestamps to a server. Preferably, the event information...http://www.google.es/patents/US20050138383?utm_source=gb-gplus-sharePatente US20050138383 - Method and system for validating timestamps
