Recording video of student while passing test
A nice feature for certification institutions would be to use the webcam recording feature to record a student while he passes is exam. This would make it much more difficult for him to cheat during the exam. The possibilities enabled by that would be great (although it would require massive resources on the server side if many students pass the exam at the same time). For example, there could be a "synchronized playback" where the student answer would show in transparency over the video while replaying, to show when he answered and if his answers are synchronized with his attitude on video.
That would probably be a great additional feature to enhance e-learning worldwide.