Patent ID: 8819430

Claim:
A communication device comprising: one or more processors operable to: perform one-to-one communication with another communication device through electric field coupling or magnetic field coupling; dynamically change authentication information, used in mutual authentication with the another communication device, based on a type of data selected on an application of the communication device, wherein the authentication information comprises a product class, wherein the product class represents a category of the communication device, and the type of data selected on the application of the communication device; select a protocol that can be utilized by the communication device and the another communication device, wherein the protocol is selected by the communication device when a device mode of the communication device has a priority higher than a device mode of the another communication device, and wherein the another communication device selects and starts an application corresponding to the type of data and the selected protocol, wherein the another communication device specifies the application to be started based on the category of the communication device specified from the product class.