Businesses in Little Rock's Heights neighborhood are on guard and tightening access after recent bank robberies in the area.
Some businesses are posting signs telling customers to knock or use a separate entrance.
"One Bank" won't let people in who are not known customers. Instead, you have to drive through for service.
"We decided to keep our doors locked we were concerned not only did someone he walk in and rob them he walked into the neighborhood." say Porter Briggs, a business owner in the Heights.
Briggs says he's also printed off signs for his neighbors and believes they will remain posted indefinitely.