Customising the customer invoice/ order form to contain a QR code

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I am trying to find an app or developer who is able to help me.  
My store is called LOVELOX - a jewellery company running an ecom store selling lockets

Users are able to customise their locket by uploading two photos and engrave a message on the back.

The customer message can be up to 30 characters which is fiddly and time consuming for us to retype on the engraving machine every time.
As such we would like to integrate a QR code on the customer order form, so when we download & print the order we can scan the QR code for our system to read the message and automatically populate the information in the on-screen template.

The QR code needs to contain the following info:
1. The engraving text (up to 30 characters on some items)
2. The font
3. The product code 
Does anyone know how this might be possible?
Many thanks