UV Barcodes Update
Here is some more information about UV barcodes provided by my friend Kevin Berisso, Director for the AIDC Lab at Ohio University. Kevin has expanded on UV barcodes and explained some other interesting ways to print “invisible” barcodes as well. -Erin
What the good people at barcode.com are referring to is the substitution of regular black (or whatever color you want) ink with a UV based ink that is only visible with a blacklight. Packaging and corrugate companies have been using this for awhile to allow them to print information on the package or corrugate that is not visible to the end user. By far, I would have to say this is the easiest and cheapest solution.
However there is a company that went a bit further with this concept. I can’t remember the name at the moment, but they developed a near-infra-red (ir) transparent paint that allowed someone to print a bar code (or really do anything including write on the item with a marker) and then paint over it. The paint only allowed some wavelengths of light through and as a result you could “see” through the paint with the scanner, but not the human eye. If I can find the company again, I will report it.
Another option out there that is not real cheap is NASA’s magneto-optical imager (MOI) which allows you to read through regular paint or other non-ferrous coatings. By using a special ink the system is able to view the magnetic fields of where the paint is.
This short video Kevin sent me shows the MOI unit in action. Check it out, it’s pretty cool.
I’d like to thank Kevin for providing this interesting information. Don’t forget to check out some of the great things that the Ohio University AIDC Lab is up to.