Viral

Viral marketing describes content spreading explosively through user sharing rather than paid distribution. QR codes can trigger viral chains when unique designs or surprising post-scan experiences (AR, hidden messages, games) motivate users to share on social media. Physical QR code photos spread online, creating scan-share-scan chains.

Designing for virality requires embedding "share-worthy" elements in post-scan experiences: exclusive content, personalized results, interactive experiences, or unexpected reveals. However, virality cannot be reliably controlled or guaranteed.