An angry mob screamed "Baby killer!" at the monster accused of slaughtering 8-year-old Leiby Kletzky, the little boy lost from Brooklyn who was snatched off the street after he was caught happily walking home on surveillance video.
Today the nation's rage is exploding at 35-year-old Levi Aron, the man accussed of butchering the little boy, and putting his body parts in a freezer and a red suitcase.
Safety expert Steve Kardian demonstrated with a young boy the use of a GPS device. Kardian told INSIDE EDITION, "By placing a GPS cell phone in his backpack, I now have a real time ability to track his every movement."
GPS tracking devices for children are popping up all over the Internet in the wake of the kidnapping.
One mom showed INSIDE EDITION how she puts a GPS tracking device in her child's fanny pack.
Safety experts demonstrated how the device could be used in a mock kidnapping at a parking lot. In seconds after the child is taken, cops would know exactly where that child was.
BrickHouse Security showed INSIDE EDITION all sorts of devices that can be put in a child's watch or in their shoes to track them.
They say sales are booming on these devices in the wake of the little boy lost tragedy that's gripping the nation.