Simon Osamoh News Today

Businesses turn to mobile surveillance to deter crime. "People generally behave better when they know they can be held accountable."

Stores including Target and Best Buy have strengthened safety measures but worry that might deter customers.

The mall is now implementing periodic and unannounced bag checks at entrances and significantly boosting its security and police presence.

The Mall of America tests metal detectors as it attempts to balance an “open-door environment” amid ongoing security concerns.