Not sure if this has been brought up before, but there are Chinese bootleg Tamagotchi IDs floating around. I see them being sold here: http://www.aliexpres.../897283136.html
Not sure if there are some around on Ebay, but they look almost like the real deal out of package, except when turned on of course. The back gives it away as a fake, though.
Just wanted to let others know about these fakes, and I really hope they're not being sold on Ebay any time soon as being real--ask for pictures of the back and with it turned on to make sure!