So, here’s what I have from playing with it for a few minutes.
Create another collection called QR Code Scans:
Have your scanner create a new entry in that collection using the data from the scanner to populate the one QR code field:
Then have it link to where you want your list to be:
For the list. You will have it be a list of your products > All Products> Where the barcode field (in that product collection) is equal to the Current QR Code Scan > QR Code.
From here you can create another action to link to a product page for that product, or a back button. Whatever you do at this point though you will want to make that action also delete the current QR Code Scan so that you do just fill that database up with scans. This will keep that database to the one scan.
Hope this helps!