The LED future

[AnAppleSnail]

It's already known-to-be-possible to use monkey brains to do new things. Like controlling extra robotic limbs as seen here. Given the inevitable obsession with wireless, gesture-based, hands-free interfaces, I see this as the next step. If brains really can map new output-and-input neurons, there's not much reason not to have a low-power transmit/receive box in your brain*. This would let you control devices like a flashlight, along with getting information about the light, its battery status, etc.

*Actually implanting things in the human body safely, consistently, and reliably is hard. There's this one person who puts hot-glue-covered magnets in her body to 'sense' ferrous metals, but she's had some gnarly infections. There's a whole engineering science behind biocompatibility. And let's not get into bugs in the hardware!

 

[HighlanderNorth]

She probably only gets the infections because of improper sanitary conditions when surgically placing the magnets. Provided you do the surgery in a clean, sanitary manner, using only materials that are hypoallergenic, like maybe surrounding the magnets in a thin layer of Niobium, if it wouldnt reduce the magnets effect, then a person should be Ok.