| 摘要 |
PROBLEM TO BE SOLVED: To improve transaction safety in a transaction device performing a transaction which does not use a medium storing information used in the transaction.SOLUTION: A transaction device performing a transaction with a user comprises: means which supports a medium use transaction in which the transaction with a user is performed using a medium storing information related to the transaction and a medium non-use transaction in which the transaction with the user is performed without using the medium storing the information related to the transaction; and means which selects different monitoring methods to monitor the user according to which transaction among the medium use transaction and the medium non-use transaction is being performed, and performs control to stop the transaction when it is detected that the user has left around the transaction device. |
