oneTwoOne Lockdown is a Chrome extension designed to prevent students from logging into other student Chromebooks. Google Admins can utilize this extension to restrict users from accessing devices they are not assigned to. By populating the Annotated Location field with the email address of the assigned user, administrators can effectively deploy this tool to block unauthorized usage. Configuration options include setting up a custom block page and defining expressions to prevent blocks based on assigned user matches, irrespective of the signed-in user.

This extension offers a practical solution for educational institutions looking to maintain device security and user accountability within a Chrome environment.