What can cellular devices do besides conventional tk + text?

[makkahn28]

I recently heard how cell phones can be used for things like checking car while in another country, or security, or even a TV remote. But what if cells can do more, like control lighting, or using appliances to unlocking your own front door? Cell phones are nifty tools, wonder what else can they do? Maybe remote control your car like in that James bond movie, ordering food at restaurant and viewing menu, garage door opener, diagnosis tool for PC, too bad it can't act like a virtual screwdriver, example, that would be a nifty piece of equipment.

[benwarez]

Indeed they can be used for many tasks, these are few of them, not all of course, there are many other countless smartphones use: calls, text, mms, emails, bluetooth, forecasting the weather, powering satellites, mobile medical labs, saving the rainforests, driving cars, health screening, rifle sights, metal detectors, miniature train windows for tiny little dolls