PURCHASING-ASSISTANCE DEVICE AND SYSTEM AND METHOD USING THE SAME

摘要

A assistance device and a system for purchasing and a method using the same. The method includes the following steps. A portable body is provided for a shopper to carry with. A code of a merchandise is read by the portable body to confirm the type and price of the merchandise. The information of the merchandise purchased by the shopper is recorded in the portable body and listed on a purchase list. The purchase list is transmitted to a trade center, which settles the accounts according to the purchase list and withdraws the portable body after the accounts are settled.