US banks alone operate more than 50,000 branch offices, with the total number of offices exceeding 60,000. Bank robberies in the US have averaged approximately 6,000 per year over the last 20 years. In 2011 alone, there were over 5,000 robberies with over 100 people killed or injured.
Pedestrian traffic rates entering and exiting banks are rarely high, however given the number of armed bank robberies, the value of a Barbecan portal is still substantial - both for the safety of customers and employees. Also, for applications such as this where traffic rates are lower, the Barbecan portal's bidirectional mode enables a single portal to serve both entry and exit functions.