STARSHIFT
Stardust’s overt security feature, StarShift™, is authenticated by observing a color-shift between two commonly available light sources (fluorescent vs. sun/incandescent). The color-shift is instantaneous and reversible. This remarkable effect does not wear out over time, no matter how many color-shift cycles the ink has been exposed to. StarShift™ is available in a variety of color transitions.
StarShift