Hi, QR code is a type of barcode - if it contains normal data (customer ID, product ID, loyalty card, etc.), POS will be able to parse it by standard.
If QR code contains special information, you can implement custom parsing via extensions:
1) Subscribing by OnBarcode event for views and dialogs
2) Extending GetScanResultClientRequestHandler - in case global parsing (any time when scan happens in POS) is required