AntiTestportal is a free browser add-on developed by adds.ocean for Chrome. This add-on is specifically designed to block cheating in testportals by implementing various measures.

One of the main features of AntiTestportal is its ability to block the "Honest respondent" technology, which is often used by cheaters to gain an unfair advantage in online tests. By preventing the use of this technology, AntiTestportal ensures a level playing field for all test-takers.

In addition, AntiTestportal also blocks the use of the document.isFocus() function, which can be exploited by cheaters to manipulate test results. This further enhances the integrity of online tests.

Furthermore, AntiTestportal includes a timer limit per question, effectively preventing test-takers from taking too much time to answer each question. This feature helps maintain the pace of the test and ensures fairness.

Another experimental feature of AntiTestportal is the Google search module, which allows test-takers to search for questions on Google within the add-on itself. This feature can be useful for quick referencing, but it should be used responsibly to avoid cheating.

AntiTestportal also offers support for Microsoft Teams, making it compatible with this popular collaboration platform.

Overall, AntiTestportal is a powerful browser add-on that effectively blocks cheating in testportals. Its features, such as blocking the "Honest respondent" technology, preventing the use of document.isFocus(), implementing a timer limit per question, and offering a Google search module, make it a valuable tool for maintaining the integrity of online tests.