If you want to apply QRCODE redirect from mobile at every page then this extension is best for you

Features:
OCMOD extension
QRCODE for every page
Work for both http and https case
DEMO LINK 2.X
INSTALLATION:
1-login to Admin > Extension > extension installer > browse > upload file qrcode.ocmod.xml
2- Admin > Extensions > modification > refresh

if have any issue, please let me know, support and installation is free dyisolco@gmail.com
Note: QRCODE image position can be changed, just need your suggestion or advise.