Abstract: The present invention relates to a functional complex desk system comprising: an electromotive chair assembly as a seat on which a user sits; a monitor-equipped multi-joint table device which has a monitor and a main table arranged at one side of the monitor, and which movably support the monitor and the main table in a multi-joint manner; a user position tracking unit for tracking the optimal position that is appropriate for the body condition or posture of the user having sat on the electromotive chair assembly; and a system controller for automatically controlling the operation of the monitor-equipped multi-joint table device so that the monitor and the main table are arranged at optimal positions according to the modified posture of the user on the basis of the tracking signal of the user position tracking unit.

Abstract: The present invention relates to an identity authentication management system in a virtual reality world, the system comprising: a virtual identity registration application unit for receiving at least one piece of protection target information among personal identity information and object information and photo image information of a protection target, and applying for registration of identity information of the protection target, which is to be used in a virtual reality world; a virtual identity character generation unit for configuring a similarity range for the photo image information, and generating at least one virtual character according to the configured similarity range; and a virtual identity authentication registration unit for performing identity authentication based on the personal identity information, performing a similarity check between the virtual character and another virtual character included in a pre-registered virtual identification card, and when the identity authentication and the simi