Can I change my details after printing?

Not in a vCard code: they are written into it. To be able to change them, make a digital business card instead: the code stays, the page updates.

Do people need an app to scan it?

No. Most phones’ cameras read the code and offer to save the contact.

Codes to print

Your name, number, email and company go straight into the contacts of whoever scans. No more mistyped numbers.

Free, no account, no scan limit.

Example — the details in this code are made up.

Can I change my details after printing?: Not in a vCard code: they are written into it. To be able to change them, make a digital business card instead: the code stays, the page updates.
Do people need an app to scan it?: No. Most phones’ cameras read the code and offer to save the contact.