Apple's announcement of a sci-fi like brain computing interface shows that the company still has its eye on cutting edge innovation. But it also highlights the challenge weighing on the company's day-to-day business.

If Apple makes enough progress, healthy people could receive the brain implant. Keyboards and mice will not be necessary to control computers. Smartphones operate similarly. Apple would probably launch the product as software only available to people who buy Apple hardware, which means it will run as a feature of iOS.

Cupertino once again captured imaginations on Tuesday, unveiling a visionary initiative that could one day allow users to command its devices using mere brain signals.