Note: ScreenKin currently uses the Truple app for ChromeOS monitoring. While ScreenKin is developing its own dedicated apps, the Truple app provides the underlying technology for Chromebook devices.

Unfortunately on Chromebooks it's not possible to do a device-wide install, this means the monitoring app only runs on the profile that it's installed on. This isn't a limitation of ScreenKin or the monitoring app, but of Chrome OS. What you can do though, is limit the ability to access guest mode and other accounts.

In order to lockdown the chromebook, the chromebook needs to have a chromebook account owner account that the child does NOT have access to. The only way to switch the Chromebook's account owner is by factory resetting the chromebook. The very first account that logs into the chromebook is established as the chromebook's owner. This owner account can then disable guest mode and limit the profiles (email addresses) that can login to the chromebook.

Powerwash (Factory reset) the device

1. Login to the Chromebook as the current account owner
2. Click on the clock in the bottom left corner, then click the gear (settings) icon
3. Click Advanced
4. Click Reset settings
5. Click Reset. WARNING, this next step will wipe out all data on your chromebook. Backup and save anything important.
6. Once you've backed everything up, restart the device.
7. Once reset, the first account to login to the chromebook will be the new owner. As the parent, you should use your own account to login first and establish yourself as the chromebook owner.

Disabling Guest Mode and Other Profile Logins

1. Login to the Chromebook as the account owner (from step #7 above)
2. Click the Clock → Gear icon
3. Click "Security and Privacy"
4. Click "manage other people"
5. Disable guest browsing
6. Restrict sign in to the following users → click Add user to add your child's account if they haven't already logged into the chromebook. Otherwise just toggle existing profiles on/off to control which accounts can access the device.