What a vCard QR code contains
A vCard is the standard contact-card format every phone’s address book understands. The code holds it as text — BEGIN:VCARD, your name, number, email and the rest, then END:VCARD — and when a phone scans it, the camera offers to save the contact. Nothing is looked up online, so it works anywhere, with no signal.
The trade-off is size. A QR code grows denser with every character it holds, and a full contact card holds far more than a web link. On a business card, where the code may be only 2–3 cm wide, a dense code is harder to scan in poor light. Keep the fields you include to the ones people actually use, and print the code as large as the design allows.
When your details change
A static vCard is permanent, which is both its strength and its catch: change jobs, numbers or email addresses and every card you’ve handed out now saves out-of-date details. For most people that’s a matter of when, not if.
A vCard QR Page solves it the other way round. The code encodes a short link — which also keeps the pattern simple, even on a small card — and the link opens a mobile contact page with your photo, social links and a “Save contact” button that downloads your card. Update the page and every card already printed shows the new details. It’s $39 (₹1,999 in India), paid once, with no subscription.