Smart locks are starting to become big business, with even Sony (Sony!) muscling in on the action. If, however, you'd like to buy a model from a company with any sort of reputation for security, then Schlage Sense might be the door furniture for you. Simply bolt this thing onto your front door and cram in four AA batteries and you'll almost instantly be able to access your home, either with your key, a four-digit PIN or your smartphone.
There are plenty of customization and control options, too, since you can create up to 30 entry codes and control how and when guests can enter. The companion app even integrates with Siri (as well as Apple's HomeKit) and means that you can ask Siri to open the door if your hands are otherwise occupied. It's still early in the product's development, and it's not likely to hit the market until much later in 2015, but the price is probably going to be between $199 and $300.