Technology that uncovers the physical signs of domestic violence is the subject of a two year study at the University of Rochester.
ALS, short for alternative light source, detects bruising that isn't immediately visible to the naked eye.
"As soon as someone is injured, blood begins to pool below the top layer of the skin,” said John Cullen, assistant director of UR’s Susan B. Anthony Center. “This technology allows us to see that bruising immediately as it happens. Otherwise, you'd have to wait a couple of days before you could see it with the naked eye."