a neuro linker

A Neuro Linker (ニューロリンカー, Nyūro Rinkā) is a collar like personal computer that can communicate wirelessly with the user's brain. It has two functions: "Virtual Reality" and "Augmented Reality". It is descended from the NerveGear, an augmented reality system invented many years before the events of Accel World in Sword Art Online

neuro linker information

neuro linker is a high level gadget from a anime called "Accel world" its can get an application for your self its can't be see by any one except when you are "connected"with somebody