What actually happens to a paper business card after you hand it over
Someone hands you a business card at an event. For it to become a saved contact, you have to still have it later, read it correctly, open your phone, and type in a name, a number and a company by hand, usually days after the conversation that made the card worth keeping. Most cards don't survive that chain. They get read once, at the handoff, and then sit in a pocket or a drawer until they're thrown out.
A QR code on the same card skips every step after the handoff: scan, and the contact saves itself, correctly, with whatever links the person actually wants you to open, at the moment the conversation is still fresh instead of whenever you next clean out your wallet.
The part that's easy to miss is what printed cards cost to keep current. A number changes, a title changes, a company email format changes, and the box of 500 cards is now 500 small inaccuracies waiting to be handed out. Printing 500 cards runs about $80, and for a 10-person team reprinting twice a year as details change, that's roughly $1,600 a year spent on cards that are already slightly wrong by the second batch.
A digital version doesn't solve the handing-out part, people still meet people in person, but it moves the point of failure from 'did they type it in later' to 'did they scan it now', which is a much shorter gap for a contact to survive. That's what the Digital Business Card on the catalog page does: one QR code, one profile, updated once instead of reprinted. A version of it runs today at digitalqrcard.com.