Mac users often work with QR codes inside design files, screenshots, and documents. Browser-based scanners and image uploads are usually the most practical desktop methods.
Mac-based teams often work inside Keynote, Figma exports, PDFs, presentation decks, packaging proofs, and campaign layouts. Desktop scanning helps them validate QR codes without constantly moving files onto a phone, which makes review cycles faster.
That said, Mac validation should still be treated as a review step, not the final real-world test. Physical scans on actual phones remain important before launch.