> For the complete documentation index, see [llms.txt](https://wiki.hacode.vn/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://wiki.hacode.vn/may-quet-ma-vach/ats-3200s/che-do-doc-ma-vach-tu-dong.md).

# Chế độ đọc mã vạch tự động

![](/files/3q051kYngUv9S2zgZJHg)