barcode reader

US /ˈbɑːr.koʊd ˌriː.dɚ/
UK /ˈbɑːr.koʊd ˌriː.dɚ/
"barcode reader" picture
1.

an electronic device that can read and output barcodes

:
The cashier used a barcode reader to scan the items.
Many retail stores rely on barcode readers for inventory management.