QR codes = 2D barcodes.  To read a QR code you need a scanner that understand 2D codes.  Most scanners can do that.

For Odoo it depends on what information is in the code. A QR code can have any type of data.  If the data are according to GS1 128 standard, Odoo should be able to decode perfect when you use the Barcode App.

Reference: https://www.odoo.com/fr_FR/forum/aide-1/how-can-read-the-barcode-gs1-128-datamatrix-and-generate-whith-odoo-131481