YOUR LOCK ON THE OUTSIDE, A SMART LOCK ON THE INSIDE: August smart locks replace the thumbturn on the inside of your door, making your regular deadbolt smarter, more secure and way more convenient. Keep the outside of your door the same, and your keys just in case (but you won’t need them).GET IN AND OUT WITH THE AUGUST APP: No pockets? No problem. Lock and unlock your door with the August app on your phone or Apple Watch, and leave your house keys behind.AUTO-LOCKS AND UNLOCKS: Auto-Unlocks as you get home for totally hands-free unlocking -- great for when your arms are carrying kids or groceries. With Auto-Lock and DoorSense, your home automatically secures once your door is closed, or after a set amount of time (optional feature).EASY TO INSTALL ON ANY DOOR: Even if you’re not so handy, installation only takes about 10 minutes. August locks fit perfectly on most single cylinder deadbolts.RENTER-FRIENDLY: Renting your place? Home improvement isn’t just for homeowners. Modernize your apartment’s lock and then take it with you when you move -- the old deadbolt thumbturn can be easily reinstalled.