Transaction management system, transaction management method, and program

A method for use of a management system for managing a transaction of an item between a first user and a second user, the management system including a first lock that is at least openable through an electronic process so as to be attached to the item and be removed from the item after being opened and a storage unit with a second lock attached to the storage unit, the second lock being at least openable through an electronic process, the storage unit being capable of physically storing the item, the method comprising:

• performing management tasks relating to holders of lock opening privileges, the lock opening privileges including a first privilege to open the first lock and a second privilege to open the second lock;
• and
• performing management tasks relating to a transaction involving an item,
• wherein in the management tasks relating to holders of lock opening privileges, when the first user is a holder of the first privilege and the second privilege, the first user is permitted to open the second lock and remove the item from the storage unit and is permitted to open the first lock attached to the item and remove the first lock from the item,
• wherein in the management tasks relating to a transaction, when information indicating that the second lock is opened is received from the storage unit, the management tasks are performed on the basis that a first transaction is concluded in which the first user tentatively receives the item from the second user,
• wherein in the management tasks relating to a transaction, when information indicating that the first lock is opened is received from the first lock, the management tasks are performed on the basis that a second transaction is concluded in which the first user inspects the item and finally receives the item, and
• wherein the first lock is attached to the item by being tied onto the item to permit an operation of the item and a visual inspection of the item to be performed while the first lock is attached to the item.

A non-transitory computer-readable recording medium storing a program which, when executed by a computer of a management system, performs a method for use of the management system for managing a transaction of an item between a first user and a second user, the management system including a first lock that is at least openable through an electronic process so as to be attached to the item and be removed from the item after being opened and a storage unit with a second lock attached to the storage unit, the second lock being at least openable through an electronic process, the storage unit being capable of physically storing the item, the method comprising:

• performing management tasks relating to holders of lock opening privileges, the lock opening privileges including a first privilege to open the first lock and a second privilege to open the second lock;
• and
• performing management tasks relating to a transaction involving an item,
• wherein, in the management tasks relating to holders of lock opening privileges, when the first user is a holder of the first privilege and the second privilege, the first user is permitted to open the second lock and remove the item from the storage unit and is permitted to open the first lock attached to the item and remove the first lock from the item,
• wherein in the management tasks relating to a transaction, when information indicating that the second lock is opened is received from the storage unit, the management tasks are performed on the basis that a first transaction is concluded in which the first user tentatively receives the item from the second user,
• wherein in the management tasks relating to a transaction, when information indicating that the first lock is opened is received from the first lock, the management tasks are performed on the basis that a second transaction is concluded in which the first user inspects the item and finally receives the item, and
• wherein the first lock is attached to the item by being tied onto the item to permit an operation of the item and a visual inspection of the item to be performed while the first lock is attached to the item.