Fallback

A fallback is an automatic alternative when the primary method is unavailable. QR code fallback scenarios: scan failure (print a short URL below the code for manual entry), redirect failure (show maintenance page instead of error), and app not installed (deferred deep link to app store).

For elderly users, pairing QR codes with phone numbers provides an effective fallback. Good fallback design ensures users always have a path to the intended information regardless of technical issues.