• Educators
  • Students
    Download your digital resources for Cheng & Tsui titles.

    Key Redemption

    Product Registration Help

    Product Registration Help

    To access purchased content or to download files from the Companion Website, you will need to create an account and register your product.
    Sign in to an existing account or register a new Cheng & Tsui account and enter your product key exactly as it appears.

    (Note: Some products will require you to answer a validation question instead of entering a product key.)

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  • E-Learning

Browser Requirements

The ChengTsui Web App is a browser-based application, ensuring that it can be used by all users regardless of their operating system. It supports all major browsers.

Minimum browser requirements:

  • Edge 79
  • Firefox 55
  • Chrome 60
  • Safari 13
  • Opera 47
  • iOS Safari 14.4
  • Android Browser 56
  • Chrome for Android 59

Note: The ChengTsui Web App has been optimized for use in Google Chrome. For best results, Cheng & Tsui suggests using the most updated version of Chrome whenever possible. Google Chrome is free to use and can be installed on all major operating systems and devices. Chrome can be downloaded to a computer at