SCAGGSVILLE, Md. — Stephanie Cerneck doesn’t go through the checkout line at her supermarket anymore. Or even the self-checkout line. She uses a personal scanner offered by the Bloom grocery store ...

SCAGGSVILLE, Md. — Stephanie Cerneck doesn’t go through the checkout line at her supermarket anymore. Or even the self-checkout line. She uses a personal scanner offered by the Bloom grocery store ...