Next smart gadget? Well there are plethora of ideas that are waiting to be implemented .
Using your smartphone, you can check the oven or the lights from the car and turn them off if you left them on. You can check in on the dog, adjust the thermostat, and turn the lights and heat on as you head home from work. Or may be we get to use 'The smart kitchen' where the kitchen will use combination of cameras , sensors etc.
But the only thing standing between these amazing ideas and reality is the achieving data security and interoperability between these gadgets. With people trying to make this things possible we can be rest assured that this will be a reality some day.