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The platform protects course materials on several levels. Locked lessons are not sent to people without access. Text can be protected from copying. A whole course can be opened only in the app, where screenshots and screen recording are hidden. Videos uploaded to a course play with the student’s watermark. In addition, the school can limit the number of devices per account.

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Available mechanisms

No mechanism gives absolute protection. For example, text can be retyped by hand, and a browser screen can be photographed with a phone. The mechanisms make copying harder and help find the source of a leak.

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Locked lessons

Only students with active access to the course and school employees receive the lesson content. Other visitors see the course program — the names of modules and lessons — but the theory, attachments and tasks of locked lessons are not sent to them. A lesson with the Free access (demo) access type (commercial schools only) is open to everyone, including people who haven’t bought the course. Demo lessons work well as a course showcase. How to mark a lesson as demo is described in Lesson settings.

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Text copy protection

Turn on Text copy protection in Settings → Main. While a student views the lesson theory, the following don’t work on the page:
  • copying selected text;
  • the right-click context menu;
  • Ctrl+C and Ctrl+V, or Cmd+C and Cmd+V on a Mac.
The exception is monospaced text, that is, code blocks. They can be copied so that students of technical courses can reuse code examples.

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Full content protection

Turn on Full content protection in Settings → Main. After you turn it on, the caption “The course can only be taken in the app” appears under the switch.

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How it works

  • Lesson theory, pinned attachments and practice open only in the official app: the mobile app or the desktop app for Windows and macOS.
  • In the app, screenshots and screen recording are hidden while the student takes the course.
  • In the browser, the student sees the placeholder “Available in the app only” with an Open in the app button.
  • Demo lessons stay open in the browser so that visitors can evaluate the course.
  • School employees who manage the course see the content in the browser too.
See Mobile app.

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Special cases

Before you turn on full protection, warn your students that the course must be taken in the app. Otherwise, students who learn in the browser will see a placeholder instead of lessons.

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Video protection

Video files that you upload to course lessons play in a protected player after processing.
  • Watermark. A mark like @12345 is shown over the video — the account ID of the student watching it. If a lesson recording leaks online, you can identify the account by the mark. The student sees their ID in the profile settings as “Account ID”.
  • Only on your addresses. The player plays videos only on the platform domains and your school domains, including a connected custom domain. You can’t embed the video on someone else’s site. When the school domain changes, the list updates automatically.
  • Window protection in the desktop app. While the protected player is on screen, the app window is hidden from screen recording, even if full course protection is off.
Videos added as a YouTube or Vimeo link play in the player of these services. The watermark and the domain restriction don’t apply to them.

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Device limit

The device limit is set for the whole school, not for a single course: My school → Login and registration → Session limit (in a corporate school — Company → Login and registration → Session limit). In strict mode, the student sees the message “Device limit exceeded”. Signing in again from the same device is not blocked. Strict mode doesn’t apply to school employees. You can end a student’s sessions in their card on the Sessions tab. See Login and registration and User card. If you lower the limit, extra sessions end for all school users, and the most recently active ones remain.

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Frequently asked questions

No. A browser doesn’t allow blocking screenshots. You can hide screenshots and screen recording only in the app — to do this, turn on Full content protection.
Instead of the lesson — the placeholder “Available in the app only” and an Open in the app button. Demo lessons still open in the browser as usual.
Yes. Employees who manage the course see the content in the browser. The restriction applies to students.
Their app version doesn’t support protected content. Ask the student to update the app to the latest version.
No. When Text copy protection is on, Ctrl+V and Cmd+V don’t work on the lesson theory page. If this gets in the way, turn off the protection in Settings → Main.
It is the account ID of the student watching the video. The mark helps you identify which account made a recording if the video becomes publicly available.
No. Videos added by a YouTube or Vimeo link are shown in the player of these services. For a video to have a watermark and not be embeddable on other sites, upload the video file to the lesson.
Yes. Code blocks and other monospaced text are not protected and can be copied as usual.
Turn on Session limit in My school / Company → Login and registration. The limit applies to all school users. In strict mode, nobody can sign in from a new device beyond the limit until you end one of the sessions in the student’s card.
No. Demo lessons are an open course showcase. They are available to everyone in the browser and in the app.
Updated: 2026-10-15 18:08 UTC