A. A Duolingo test taker has to keep his/her webcam switched on while taking the test in order to let the proctors review the test video. This way they will be able to verify one's identity and ensure that the person taking the test is the same as the one who created the account. It is also needed when the test taker appears for the video interview section of the test, which along with the proficiency score is sent to institutions. Your behaviour may be evaluated during the same and a check will be kept on any unethical practices.