Soon after the Kinect's 2010 release, hardware hackers wrote code that let them control the device so they could use it for their own projects.

BBC: Microsoft shares code for Kinect for Windows game gadget

In other words, you could have Siri-like control of virtually any device, with all of the required hardware and software residing on an iPhone or MacBook, linked with other devices over WiFi or Bluetooth.

ENGADGET: Apple patents Siri-like system for controlling cameras, PMPs through a computer or smartphone