The stylus wrote in a noncorrosive, alcohol-based fluorescent ink that was visible only under black light.

The special fluorescent ink in our markers makes the board come to life when turned on.

Special "security" markers, with fluorescent but otherwise invisible inks, are used for marking valuables in case of burglary.

Other security applications include the use of pens containing a fluorescent ink, generally with a soft tip, that can be used to "invisibly" mark items.

Two numerals 10 printed in invisible inks fluorescent under ultraviolet light in brownish yellow.

Often printed using intensely colored fluorescent inks, they typically featured a mixture of found images and specially drawn artwork.

Fluorescence : The number panels are printed with fluorescent ink.

A highlighter is a felt-tip pen filled with transparent fluorescent ink.

Ferranti suggested a fluorescent ink instead of a conductive one.

Those papers have fluorescent ink on them-and you must have left a fine trail, if they ever look for them.