The profitability of home security systems has become ever more apparent. That's resulted in intense competition within the industry as startups and big name corporations duke it out. The participation of major brands has validated and helped spur investment in the industry. Competition has gotten even fiercer as telecommunications and cable companies get in on the action. ATandT, Comcast, Time Warner Cable, and Verizon all offer home security solutions, many of which are bundled with other services such as cable and internet. From changing consumer demographics to tech advancements and telecoms' participation, an array of factors have aligned to make home security a massive industry. The market is expected to grow through 2020, and there's no sign it will slow down after that. In the science fiction movie "Gattaca," Ethan Hawke's character was able to get into a secure area using nothing but a scan of his retina. That technology actually exists today. It's called biometrics. In addition to your eyes, it can scan your fingerprints or recognize your voice.