Disclosed are various embodiments of a lockable toilet fill valve and methods according to the present invention. The second antenna member is located between the ground member and the flat plate portion with a predetermined distance from an end of the flat plate portion opposite to the protrusion portion. A first portion of the resistors between either one of two end nodes and a central node of the string have substantially equal electrical resistances. A positioning hole extends from a wall defining the groove through an outer periphery of the second handle part. The holding portion holds the held portion of the needle, and the grip portion is gripped by a user of the needle puncher. A plurality of servers are utilized: first servers linking merchants with financial institutions, second servers operated by the financial institutions for performing financial transactions for a group of clients with whom consumers perform commercial and financial transactions, and third servers used by service operators for performing validation operations for the transactions.