How to Read QRCode Value from one uploaded pdf file

Frappe HR
1

Hi All,
in expense claim form especially in detail table, we would like to attach one pdf file with QRcode, and QRcode can be recognized by other scanner(for example phone) with certain meanning value, how can we read this QRcode value directly from HR module?

Thanks in advance
Best regards
Peter He

2

very old and close it
found related solution, thanks!

3

what is the solution to this topic?