Some students are copying answers online. How do we avoid it?

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Some students are copying answers online. How do we avoid it? You can't aviod it XD Last year we identified this problem and have implemented the following: Advanced Encryption. We improved our encryption so now people cannot copy and paste the answers. This was the main way students cheated. We solved it. (Why the ans is here?) Illegal disconnection. The new version of Learning Management System detects illegal disconnection, and stops it. (Sharply cut the process is ok) No Multiple Windows. Students see disordered code if they try to use browsers’ open link in new window function. (We don't need that) No Duplicate Login. We have eradicated the ability to login EB with different browsers or PCs and just copy the answers from one to the other. (We don't need that, la la la) No Logout in Lessons. If they close the browsers, their answers will still be recorded. (Why loging out?) Posting Answers on websites. Any reports coming to us are followed through. We try to discourage and warn them before we take actions. Discourage me The ONLY way to cheat on EB. Call a friend and have the answers supplied, post answers to individuals, or correctly guess them we can’t control. Yes! ALL homework faces this problem. We use an ARL (Assessment for Reinforced Learning) every month, where the answers are not shown, and cannot be supplied by any method known or used to date. But just EB have some answer in blog, forum...... (we are the one!) Hence, it is easy to identify those that cheat on the normal lessons. The reports automatically include ARL scores to give a complete picture of student learning.