Webflow QR Code Scanner
This tool let you have a QR Scanner inside your website, it opens your mobile phone or table camera and scan QR codes. In this case is searching for an specific text inside the QR code but it can scans URLs, Numbers, etc.
Very useful resource for high-fidelity prototyping.
Instascan is a lightweight JavaScript plugin. Currently I have not been able to get this to work on iOS, but is working good on Android devices. Apparently there may be some a solution. Find more information in the instructions page. If you know or find a solution for make it work on iOS please let me know =).