[andreareina]

QR code requires you to scan it in that moment. A human-readable (and -recognizable) URL stands a chance at being remembered at a later date.

[will4274]

> QR code requires you to scan it in that moment

Not really, anymore. Android permits you to take a picture of a QR code and use it's URI later by going to the saved picture and clicking "Lens" (which activates Google's ML to identify QR codes).