A merchandise registration processing system which comprises a plurality of information terminal devices which are so arranged as to correspond to displayed merchandises and each of which has a display unit that displays information related to the merchandise, and a communication unit that receives information to be displayed on the display unit, a server device which has a terminal display controller for transmitting information to be displayed on the display units of the respective information terminal devices to the information terminal devices, and a settlement device that performs settlement processing of a commercial transaction, the information terminal devices, server device, and settlement device being connected by a communication network, the system characterized in that,
- the information terminal devices comprise a user recognition unit for obtaining, from a user who holds out an arm to a merchandise corresponding to the information terminal device, user identification information in a noncontact manner, an input receiving unit for, after the user identification information is obtained by the user recognition unit, receiving a registration input of a merchandise corresponding to the information terminal device, and a registration merchandise information transmission unit transmitting registration merchandise information including merchandise identification information for identifying the merchandise and the user identification information obtained by the user identification recognition unit from the communication unit to the server device through the communication network,
- the server device comprises an information reception unit for receiving information transmitted from the information terminal devices through the communication network, a transaction information storage unit that has a transaction information storage area for the respective user identification information, a registration merchandise information processing unit for adding merchandise identification information included in registration merchandise information received by the information reception unit to the transaction information storage area for the respective user identification information of the transaction information storage unit, and a commercial transaction information transfer unit for transferring transaction information stored for the respective user identification information in the transaction information storage unit to the settlement device, and
- the settlement device comprises an input unit for the user identification information, and settlement processing unit for performing the settlement processing by transaction information corresponding to the user identification information input by the input unit.