identification light

20 LETTERS · STARTS WITH I

identification light is a valid 20-letter word worth 29 points in Scrabble and 33 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

I1D2E1N1T1I1F4I1C3A1T1I1O1N1L1I1G2H4T1

1 + 2 + 1 + 1 + 1 + 1 + 4 + 1 + 3 + 1 + 1 + 1 + 1 + 1 + 0 + 1 + 1 + 2 + 4 + 1 =29 PTS

DOUBLE WORD → 58TRIPLE WORD → 87

MEANING

What does identification light mean?