How do I create a hidden image to be used with a decoder?

Rules

Pattern needs to be PMS: Warm Red.
Hidden image and/or message needs to be PMS: 333 or 332

You can convert the colors to CMYK to print 4 color or RGB for web use. If you want to hide the image more you can also add Yellow, Orange, and Pink.

Set your pattern first (red) 100%, then place hidden image and/or message on top (pms333).
Set the opacity to 20% to 40% (light enough not to see it without glasses,but dark enough to see with glasses. Every printer will be different, so that part we can not give an exact %.)

Another way to make it hard to read without the glasses, but to make the opacity % darker, is to set the hidden message upside down.
How many people can read upside down? It works every time.

If you have any questions on art set up for hidden message or glasses, give William Chiles a call at 901-381-1515