My sister and her ex-boyfriend used to operate an Internet cafe. But they were forced to close down for failure to meet the high cost of operation including the exorbitant rentals. Somehow my sister blamed the lack of trusted people to man the shop when they are not around. The person left to oversee the business during daytime may have been too lax in performing her duty so they failed to meet their target earning. They should have installed wireless security systems at the time the computers where set up. Security cameras will help them monitor dishonest customers and negligent supervisor. My sister has learned her lessons well. She will never venture in the same business in the future.