FedExForum was the first arena to utilize new "see-through" shot clock units which allow spectators seated behind the basket to see the action without having the clocks interfere with their view. The idea came when a fan of the NBA's New Jersey Nets who sat behind the basket at Continental Airlines Arena sent an e-mail to NBA Commissioner David Stern, asking for technology to improve his view, and Daktronics obliged with the innovation at FedExForum in 2004. The NBA approved the unit a year later for full use and has seen the new units installed at Philadelphia's Wells Fargo Center, Spectrum Center, TD Garden, Moda Center, Capital One Arena, State Farm Arena, and Staples Center after the approval. As of the 2011–12 NBA season every NBA arena had implemented the transparent shot clocks, with Pepsi Center, The Palace of Auburn Hills, Oracle Arena, Target Center, and Sleep Train Arena being the last NBA arenas to install the clocks.