Abstract: Methods and systems are provided to increase the security of a user's information as well as perform secure transactions. More particularly, in one exemplary embodiment, a user inputs information into a database which enables or disables information which may be requested by a third party establishment. In another exemplary embodiment, location based transaction authentication is used.

Abstract: Methods, data servers, signal and destination device for optimizing asynchronous delivery of a data content. Once it is determined that more than one instances of the data content are asynchronous, attempts are made to merge them into a fewer number of synchronized instances. It is done by providing a synchronization instance before delivering the synchronized instance and the synchronization instance of the data content. The synchronization instance may be consumed first while the synchronized instance is stored in cache. Thereafter, the synchronized instance is consumed from the cache upon completion of the synchronization instance. Alternatively, the synchronization instance may have an accelerated bit rate and be consumed while it is being received and stored in cache. The synchronized instance is thereafter consumed upon completion of the synchronization instance.