Comcast-Spectacor has invested $500,000 to upgrade its interactive team displays at Wachovia Center, introducing I-Wall technology that its consultant thinks is the first to be installed at a sports facility. The flat-screen displays, more common at museums, science centers and traveling exhibits, have the flexibility to show video, animation, photographs and static graphic images, all operated and controlled by the viewer moving a handheld monitor along two rails. Each display is 24 feet long and 40 inches deep. Wachovia Center’s two I-Walls focus on the Flyers’ and Sixers’ history and greatest moments. Both displays will be installed Oct. 6 on the main concourse and will be ready for operation for the Flyers’ Oct. 11 regular-season home opener. Comcast-Spectacor sees the upgraded interactives as a way to keep the 12-year-old facility fresh and cutting-edge to improve the fan experience, officials said. I-Wall technology has been in existence for about nine years and has been used to enhance exhibits at the Franklin Institute in Philadelphia and the American Museum of Natural History in New York, said Frank Nave, vice president for Lynch Exhibits and Comcast-Spectacor’s project consultant.