| 摘要 |
<p>A settlement environment is described. A POS device (4) reads a barcode of an item to be bought by a user (S1), and the POS device (4) identifies plural electronic money settlement devices embedded in a cell-phone 2 (S4), and the POS device (4) compares predetermined discounted settlement value of identified plural electronic money settlement devices, and the POS device (4) selects the electronic money settlement device of the cheapest discounted settlement value (S8), and then a settlement is made with the use of the selected electronic money settlement device (S103).</p> |
