The same technique was used in the first TV remotes[0]. It drove people with good hearing nuts, had interference issues with natural phenomena, and had fundamen

The same technique was used in the first TV remotes[0]. It drove people with good hearing nuts, had interference issues with natural phenomena, and had fundamental bandwidth limitations. Otherwise, it is a cleaver hack around the lacking device-to-device wireless support. [0] http://en.wikipedia.org/wiki/Remote_control#Television_remote_controls http://en.wikipedia.org/wiki/Remote_control#Television_remot...