> 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-3200-u-and-r/che-do-doc-ma-vach-tu-dong.md).

# Chế độ đọc mã vạch tự động

![](https://3659960158-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-McTIFySDDgIcf2zitGY%2Fuploads%2F17ZPETT1tVCPNUqDqmG4%2Fimage.png?alt=media\&token=4c61a791-bb84-4177-9d7a-fa7677c75881)