American Sign Language sign for “light" (VIDEO) Boston University This video is under embargo. Please login to access this video. Caption The American Sign Language sign for “light” uses an uncommon handshape—signs rarely use the middle finger—and is produced closer to the face. Credit Video courtesy of ASL-LEX.org Usage Restrictions Please provide video credit to ASL-LEX.org License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.