Hasta La Motion!

I’ve got an idea. I wanna write my password in an image, in after effects (could use photoshop too, but im not too good at ps). i make the font completely white, then I add a background, which is also white. Actually, it’s brighter, its at 2. Meaning 200% white. Now, my password would now be impossible to see by the human eye, but the information is there. If i render this to a CD or something, I can later open the image, and turn down the exposure. You see where I’m going with this? The text would now be “see-able”. But my problem is, what image format supports 32 bpc, and colors higher than 1? Even TIFF clips at one. I’ve heard cineon, but no matter the settings i put it at, it clips at one when I render -.-
I need a format that keeps all information, though you can’t see it. Or any tips with the cineon settings would also be nice.

Any help would be greatly appreciated, and please, send it to my email: tarjei.skjaerset@hotmail.com

You got the picture? my nosey friends would find the image file wich says “Facebook password”, or what ever, but they’d never figure it out. I think hiding the password in plain sight is better than a postIT note under my desk, anyway.

Thank you in advance.