Lock student devices to get their attention or prevent usage during instruction.
How to Lock
Single Device
Click on any device in the Classroom grid and select "Lock."
All Devices
Click "Lock All" in the session toolbar. Every online device in the session is locked immediately.
Selected Devices
Check the boxes on multiple devices, then click "Lock Selected" from the bulk actions menu.
What Students See
A full-screen lock overlay with:
- The KyberGate shield logo
- A message: "Your device has been locked by your teacher"
- They cannot navigate away, switch apps, or dismiss the overlay
Unlocking
Click "Unlock" on individual devices, or "Unlock All" to release all locked devices.
Notes
- Lock commands are sent in real-time via Firestore
- Devices must be online to receive lock commands
- If a device is offline when locked, the command will execute when it comes back online