I'm working on a project that is evaluating the direct use of the raw Surface image + computer vision vs. the built-in tags.
We would like to use the tags, but we need them to appear nearly invisible to the naked eye. My initial thoughts were to possibly print the tags using an ink that is only visible in the IR spectrum.
Has anyone used IR ink in the past with the Surface? I've done a significant amount of searching on the intertubes and all I've found are patent applications.