An information processing device, comprising: a first information acquiring unit configured to acquire identification information of an RFID tag on a basis of communication with the RFID tag according to near field wireless communication; and a second information acquiring unit configured to acquire position information of the RFID tag in a method different from a method used by the first information acquiring unit, wherein the position information is transmitted to an external device; in particular wherein the identification information acquired by the first information acquiring unit is transmitted to the external device, wherein the second information acquiring unit acquires the position information of the RFID tag on a basis of information acquired from a capacitance sensor configured to detect a position of the RFID tag or on a basis of information acquired from an optical sensor that detects a position of the RFID tag, characterized in that the information processing device comprises a reader/writer pad including a plurality of reader/writers arranged in matrix form, wherein the first information acquiring unit acquires the position information of the RFID tag on a basis of information acquired from a plurality of readers/writers configured to perform the near field wireless communication with the RFID tag on a basis of the communication with the RFID tag according to the near field wireless communication, and wherein the capacitance sensor is arranged such that the capacitance sensor is superimposed on the reader/writer pad or the optical sensor is arranged such that the optical sensor is superimposed on the reader/writer pad. a first information acquiring unit configured to acquire identification information of an RFID tag on a basis of communication with the RFID tag according to near field wireless communication; and a second information acquiring unit configured to acquire position information of the RFID tag in a method different from a method used by the first information acquiring unit, wherein the position information is transmitted to an external device; in particular wherein the identification information acquired by the first information acquiring unit is transmitted to the external device, wherein the second information acquiring unit acquires the position information of the RFID tag on a basis of information acquired from a capacitance sensor configured to detect a position of the RFID tag or on a basis of information acquired from an optical sensor that detects a position of the RFID tag, characterized in that the information processing device comprises a reader/writer pad including a plurality of reader/writers arranged in matrix form, wherein the first information acquiring unit acquires the position information of the RFID tag on a basis of information acquired from a plurality of readers/writers configured to perform the near field wireless communication with the RFID tag on a basis of the communication with the RFID tag according to the near field wireless communication, and wherein the capacitance sensor is arranged such that the capacitance sensor is superimposed on the reader/writer pad or the optical sensor is arranged such that the optical sensor is superimposed on the reader/writer pad.