SAN FRANCISCO Nvidia denied a Chinese accusation that the U.S. chip maker’s AI chips have mature tracking and location and remote shutdown technologies. The company said its chips have no "backdoors or kill switches." "NVIDIA GPUs do not and should not have kill switches and backdoors," wrote Nvidia’s Chief Security Officer David Reber in a blog post. "Embedding backdoors and kill switches into chips would be a gift to hackers and hostile actors. It would undermine global digital infrastructure