Silver said the NBA is working with Wilson to develop a smart basketball with a built-in chip weighing about 1 gram, tested in the G League and summer league with players unable to tell the difference. The technology can help detect touches on out-of-bounds calls and altered shot arcs for goaltending calls, with future consumer applications for shooting data charts. It could assist referees in games as early as 2027, while consumer versions may take several more years.