Project a QR code. Students scan, type their name, done. When you're ready, hit Randomize & Reveal and every phone lights up with a unique number from 1 to N.
Sign in and share your dashboard on the projector. Students see a big scannable code.
They scan, type their first name, and tap Join. No accounts, no downloads, no logins.
One click. Every phone shows a unique number from 1 to N. Perfect for turns, groups, and quizzes.