If your ScreenSolo runs on a Mac mini bolted to a classroom projector, you probably don't want a passing iPhone connecting mid-lesson. PIN mode locks it down.
How it works
- Settings → Receiver name + PIN → Require PIN (toggle on).
- ScreenSolo generates a random four-digit code displayed on screen.
- When someone picks your computer from the iPhone's AirPlay list, iOS prompts them for the code. Without it, the connection is refused.
The PIN changes every time you restart ScreenSolo — there's no permanent code to leak. Each session is fresh.
Use cases
- Classrooms: only the teacher's iPad can mirror. Stops a student joining "by accident."
- Conference rooms: the presenter shouts the code or shows it on the projector.
- Reception areas: the receiver is visible to everyone on the guest Wi-Fi, but only the staff iPhone with the PIN can use it.
Without PIN mode
Without PIN, *anyone* on the same network who picks your computer in their AirPlay list connects immediately. That's fine for personal use at home — bad in a public space.
Apple's AirPlay password feature
iOS also has a separate password feature ("Always require password") under Settings → AirPlay & Continuity. That's a *separate* mechanism configured per AirPlay receiver. PIN mode in ScreenSolo plays nicely with it; you can use both at once or either alone.