Terrified, the toddler resorted to using his baby version of ASL to sign “help” to his mum while the photographer at the Provo Town Center Mall in Provo, Utah, snapped a picture.

The ASL Alphabet lens will show how to fingerspell your name and let you test your sign language fluency.

“Does anyone on board know American sign language?” one of the flight attendants asked passengers more than an hour into the over five hour-long journey. Clara, who had learned to sign about a year ...