AddonUEC is a Chrome add-on developed by medit that aims to improve the convenience of various systems used by Dentsu University students. It provides several helpful features that enhance the functionality of the school's information systems.

One of the main features of AddonUEC is its enhancements to the syllabus search page. It allows users to set their preferred initial values for course affiliation, resolves the issue where pressing the Enter key does not execute the search, and automatically extends the timeout period to prevent session expirations. Additionally, it provides the option to hide personal information displayed on the top left corner, as well as the name, student ID, and GPA on the unit acquisition status page. The add-on also enables the URL links on the top page to open with a single click and resolves the problem of announcements being displayed in Chinese font.

Furthermore, AddonUEC improves the functionality of WebClass by ensuring that it opens in the same tab instead of a new window when accessed from the top page. It also offers a convenient auto two-factor authentication feature with detailed explanations in the settings.