There's a wide range of devices to be aware of when you move in to a smart home, including door locks, alarms, security cameras, garage-door openers, lighting systems, smoke detectors, and irrigation systems, as well as modems, gateways and hubs that tie them all together. Large appliances like refrigerators, washers and dryers also increasingly are connected.

Though less than 20 percent of U.S. homes have these kinds of things built in, adoption is growing from the high end of the market, according to research company Parks Associates. Parks estimates 32 percent of homes larger than 3,000 square feet (278 square meters) have at least one smart product.

From the article "Someone just bought your smart home. Did they get your data, too?" by Stephen Lawson.