bar code
noun [ C ] uk/ˈbɑː ˌkəʊd/ us/ˈbɑːr ˌkoʊd/
条形码
a small rectangular pattern of thick and thin black lines printed on a product, or on its container, so that the details of the product can be read by and recorded on a computer system
A handheld scanner is used to read bar codes. 用手持式扫描仪读取条形码。
Compare: QR code