e/UV Marker

Information
has gloss	eng: An Ultraviolet (UV) marker is a pen whose marks can be seen only under an ultraviolet light. They are commonly used in security situations to identify belongings or to protect from the copying of banknotes. UV pens can now be bought at some stationery shops to security mark items of high value in case of theft.
lexicalization	eng: UV Marker
instance of	(noun) a writing implement with a point from which ink flows pen