Recently, E-Mart, a major discount chain of South Korea’s retail giant New World Department Store, has released a smart shopping cart that will be trial run to ensure the competitiveness of its offline distribution channels. E-Mart stated that two automatic shopping carts named “eli” will be displayed for 4 days at the warehouse supermarket Traders in Hanam, southeast of Seoul. According to reports, the shopping cart will automatically follow customers and help them select products. Customers can make direct payment through credit card or Shinsegae's mobile payment terminal. The shopping cart can judge the goods on the car by comparing the weight of the paid goods and the weight of the goods in the car. Whether all payments.