Newsletter Signups at Events/Conventions

Hi there!

I do physical events, and I was wondering if there are any good ways to capture subscriber signups in person? (Kind of like the mail chimp app.) I’d like to avoid the data entry of capturing them on paper and hand entering them later.

If there isn’t a slick way to do it, I guess I could do a QR code that links to a signup landing page… but I wanted to see if anybody has already found a better solution.

Thank you!