Session start method, icon image creation device, session startg program, and icon image creation program

摘要

A session initiating method includes specifying an icon image corresponding to a user; determining whether start information is embedded in the icon image; extracting the start information from the icon image based on an algorithm that is unique to the user when it is determined that the start information is embedded in the icon image; setting-up the session; inputting the start information during the session; verifying whether the start information input at the inputting satisfies a condition for initiating the session; and controlling the session based on a result of the verifying. When it is verified that the start information satisfies the condition, the controlling includes initiating the session, and when it is not verified that the start information satisfies the condition, the controlling includes aborting the session.