(CNN) -- Google is knocking at your front door. It wants to come inside, make itself at home, and quietly turn all of your boring home devices into "smart" connected gadgets that learn about your patterns and preferences, talk to each other, collect data about your habits and make life easier by assisting with daily tasks.
On Monday, Google announced it was buying smart-device company Nest Labs for $3.2 billion in cash. This is Google's first major foray into connected homes, and news of the deal ignited a flurry of speculation about what the Silicon Valley giant really wants from Nest, as well as some privacy concerns.
Nest currently only sells two products: a smart thermostat that learns your habits over time and adjusts the temperature accordingly, and a personable smoke and carbon monoxide detector that doesn't panic when you burn toast.
While the devices have been popular, on the surface they don't seem like they move enough units to be worth such a hefty investment, even at $130 to $250 each. It's what's behind the scenes and inside the gadgets that makes Nest a coveted get for Google.