Yes they are fake. To put it short you can't make yourself invisible. Let's say for some reason you are "invisible" You'd be blind and everyone can see that your there. How?
In order for any living thing that uses it's eyes to seeour cornea's would need to project the light into our retina, therefore if that wasn't to happen we would all be blind. and to my other statement, you'd appear visible because unless you are able to bend light (Once again impossible)) It will refract off of you. So in my honest opnion it would be a living hell being invisble or atleast trying to be. Anyway the closet thing you would be to invisble is in some camouflage clothing standing next to something just like you, even chameleons aren't invisible they can only blend in with their enviornment.