Patent ID: 7830260

Claim:
A learning device, comprising: at least one RFID tag unit, each of which having an outer surface, an inner space, and a shielding device mounted in the inner space, the shielding device being arranged adjacent to an inductive area defined on the outer surface of the tag unit; a RFID tag, which is stored with an identification code and is mounted in the inner space of each tag unit; a platform with at least one interrogation zone thereon; and a RFID reader system installed in the platform; the shielding device including a magnet, and the interrogation zone of the platform being provided with a magnet-actuated switch, the magnet-actuated switch being actuated by the magnet when RFID the tag unit is placed on the interrogation zone of the platform; wherein when the RFID tag unit is placed on the interrogation zones of the platform, the RFID reader system reads the RFID tag of the RFID tag unit.