What is NOT a method used to transfer radar identification for handoffs?

The correct response highlights that the method of transferring radar identification for handoffs does not include the use of EDST, which stands for Enhanced Data Services Terminal. This system primarily focuses on providing efficient data transmission and communication but is not specifically utilized for transferring radar identification during handoffs between controllers.

Radar identification transfer occurs most effectively through methods such as verbal commands, where one controller communicates directly with another to clarify the identification of an aircraft. Similarly, using a data block allows for the electronic transfer of the aircraft’s identification details and pertinent information directly on radar displays, ensuring that incoming and outgoing controllers have the most accurate information at their fingertips. Graphical displays can also facilitate this process by visually representing the aircraft's trajectory and relevant details for easier identification.

In summary, while the other options are recognized means of radar identification transfer, EDST does not serve that function, making it the correct choice in this context.