Contactless Registration and Check-In for in Sanctuary Services

Good day, all. We are working on reopening our sanctuary for services. Lots of moving parts to achieve this for sure. One aspect I’m researching is a Contactless Check-In process and Contactless Walk-Up Registration on site (along with an advanced event registration).

Has anyone used or have opinions on utilizing QR codes or Text (text xxx to worship) for walk-up registrations or contactless check-in using Realm? Thank you.