What about that guide?
It's been confirmed by garyopa.
And we know he has close ties to the Gateway team.
If Gateway lied to us, so can anyone "close to them"... that guide could have been completely made up by anyone, even original author said he has no idea if Gateway even works like that.. its just a way to scan a QR code, its always been there and is known to everyone that you can do that. Someone just took it and put it into a nice guide with screenshots.. nothing new there.