Re: Why the obsession....
> Why the obsession with using smartphones as remotes?
It's arguable that a true IoT device shouldn't even need a remote. In fact, most of them shouldn't need a person to tell them what to do, at all.
Take an IoT'd lightswitch as an example. Instead of a boring old PIR to detect the presence of people and then turn the light on or off accordingly, a better solution is to design in a $5 ultrasonic Doppler sensor to detect the direction of people: into or out of the room. When $number_of_people == 0 OR $light_level > daylight then turn off the lights.
All that this obsession with remote controls does is to add one more level of indirection into the equation. Instead of a person making a physical action to control a device, they are now required to do so by means of another piece of equipment. As a design concept it's as daft as calling for your butler to do these trivial things for you: more trouble than it's worth, so I'm told.