Help me out here...
Mid 80's, I think the main actor was a WWF wrestler (first guess was Brutus "The Barber" Beefcake, but IMDB doesn't list any movies for him). Something about aliens already here, controlling society on earth via subliminal messages in advertising that only this main actor guy can see thanks to special sunglasses.
...
AHA! Thanks Mike! It was Rowdy Roddy Piper, and the movie is "They Live"
"Nada, a down-on-his-luck construction worker, discovers a pair of special sunglasses. Wearing them, he is able to see the world as it really is: people being bombarded by media and government with messages like "Stay Asleep", "No Imagination", "Submit to Authority". Even scarier is that he is able to see that some usually normal-looking people are in fact ugly aliens in charge of the massive campaign to keep humans subdued."
Why do I bring this up?
Because of this: "BBC News - Hiding messages in plain sight"
Japanese firm Fujitsu is pushing a technology that can encode data into a picture that is invisible to the human eye but can be decoded by a mobile phone with a camera.
The company believes the technology will have spin off implications for the publishing industry.
"The concept is to be able to link the printed page into the digital domain," said Mike Nelson, general manager for sales operations at Fujitsu Europe.
Aaron, get some yellow markers too!