Long distance lovers

The article here describes wi-fi wine glasses which let people in long distance relationships (or any other sociable pairs I guess) share a drink. The glasses glow when one of the pair raises the glass and puts it to their lips, no matter how far apart they are. Now I'm no physicist but if you can make LEDs glow using wi-fi what else can be turned on using similar technology? Surely it's only a matter of time before two people can have all the fun of an intimate relationship without ever having to be in the same room! Vibrating mobile phones have been around for a while, how difficult would it be to adapt that technology and make them more controllable using wi-fi? The mind boggles as to how far this could be taken.