Board Thread:General Discussion/@comment-25714246-20150126174816/@comment-1728618-20150813124904

They did not specify if he did the scan after loging out or if the device did it on it's own accord. At least I don't recall anyone saying anything other than him being found dead. I assumed Kayaba used the device to play SAO and it was set to do the scan automatically, if he was about to die IRL or if he was defeated in the game (originally planned for 100th level) within the game.

As for the doctors, who is to say they tested it on patient that was about to die. Does not seem likely. Yuuki might have been the first to die within Medicuboid. We don't have enough information to confirm my theory, but we also don't have enough information to disprove it.

There are some other scenarios, which don't rely on the theory of automatized upload, however they seem a bit more unlikely...