Patent ID: 8341396

Claim:
A method for inserting signature blocks into messages transmitted along a communication path between a first wireless client station and a second client station, comprising: receiving, at an intermediate node in the communication path, a message transmitted from the first wireless client station, destined for delivery to the second client station, the message bearing a sender-identifier and a recipient-identifier, wherein the message does not include a signature block; determining based on a field of the message whether the message is of a message type that is to include a given signature block; in response to a determination that the message is of a message type that is to include a given signature block, the intermediate node querying a database containing signature blocks for a plurality of subscribers to a wireless service provider network so as to select, based at least in part on the sender-identifier and the recipient-identifier, a predefined signature block for the message, wherein each subscriber has one or more signature blocks for different message recipients stored in the database, wherein the database includes multiple signature blocks for a given subscriber and each signature block for the given subscriber is associated with one or more recipients; the intermediate node inserting the selected signature block into the message and forwarding the message to the second client station; providing a web provisioning server wherein the first wireless client station is configured to create a customized signature block and assign the customized signature block to a particular message recipient or group of recipients using the web provisioning server; and storing the customized signature block in the database.