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Viewing rules

Please read these before unlocking a lecture.

Your account is personal

Each account is for one student. Only one device can be signed in at a time; signing in elsewhere signs the other device out. Do not share your password.

48-hour access

Unlocking a lecture lets you watch it as many times as you like for 48 hours from the moment your payment is confirmed. After that it locks again and can be unlocked again at any time.

Every copy is fingerprinted to you

Each lecture you watch carries your name on screen and an invisible fingerprint unique to your account. Any recording or downloaded copy of a lecture can be traced back to the account it came from.

Downloading, recording and sharing are not allowed

Lectures are for your personal viewing only. Downloading them (including with browser tools or extensions), screen-recording, filming the screen or sharing them in any form is prohibited. Download attempts are detected automatically: access is suspended immediately and the account is reviewed. Accounts linked to a leaked lecture are permanently banned without refund.

Questions? Contact the administrator.