UNLOCKING DEVICE, PORTABLE TERMINAL, UNLOCKING SYSTEM, CONTROL METHOD OF UNLOCKING DEVICE, CONTROL METHOD OF PORTABLE TERMINAL, CONTROL PROGRAM, AND RECORD MEDIUM

PROBLEM TO BE SOLVED: To provide an unlocking system and the like capable of properly unlocking while ensuring the security.SOLUTION: The unlocking system stores an electric lock, a key and a portable terminal correspondence table (301) in which an electric lock ID, a key ID and a portable terminal ID are associated with each other. In the unlocking system, an unlocking permission request for unlocking an electric lock (3) is acquired, a portable terminal (1) is identified. The unlocking permission request is notified to the portable terminal (1), the unlocking permission is acquired from the portable terminal (1), and an unlocking instruction to unlock the electric lock (3) is transmitted.SELECTED DRAWING: Figure 1 【課題】セキュリティを保ちつつ、適切に解錠可能な解錠システム等を実現する。【解決手段】電気錠ＩＤと鍵ＩＤと携帯端末ＩＤとが対応付けられた電気錠、鍵、携帯端末対応テーブル（３０１）が記憶されており、電気錠（３）を解錠するための解錠許可要求を取得し、携帯端末（１）を特定し、携帯端末（１）に解錠許可要求を通知し、携帯端末（１）から解錠許可を取得し、電気錠（３）を解錠するための解錠指示を送信する。【選択図】図１