AT&T plans to introduce a nationwide program today that gives owners of small- and medium-size businesses some of the same tools big security companies offer for monitoring employees, customers and operations from remote locations.

Under AT&T’s Remote Monitor program, a business owner could install adjustable cameras, door sensors and other gadgets at up to five different company locations across the country.

Using a Java-enabled mobile device or a personal computer connected to the Internet, the owner would be able to view any of the images in real time, control room lighting and track equipment temperatures remotely. All the images are recorded on digital video, which can be viewed for up to 30 days.

“It is Big Brother, but in this day and age, you need these type of tools” for theft protection, weeding out false accident claims and other risks, said Beaux Roby, owner of a chain of five Mama’s Café restaurants and two banquet halls in Texas. Mr. Roby has been using the system for nine weeks as part of a pilot program. “You have fraudulent claims from customers that trip and fall and things like that,” he said.