Both Yale Approach Lock with Wi-Fi and Keypad and Yale Assure Lock 2 offer signature smart features like Auto-Unlock and Auto-Lock, but there's a big difference: how they attach to your door. Yale Assure Lock 2 replaces your entire deadbolt during installation while Yale Approach Lock with Wi-Fi only replaces your thumb turn, which lets you keep your keyway and makes it renter-friendly. Yale Approach Lock also installs on the interior side of your door, while Yale Assure Lock 2 attaches to both

Big news: our first renter-friendly smart lock is here. Meet Yale...

No need for a key! Using the Assure Lock with Bluetooth and the Yale Assure app, you can unlock your door by simply rotating your phone 90 degrees and tapping the keypad! Here's how it works! | Yale Home US

Yale Approach Smart Wi-Fi Deadbolt Retrofit Smart Lock, Unlimited Virtual Keys, App Remote Control, Keyless Entry - Silver

Yale Security Wi-Fi and Bluetooth Upgrade Kit for First Gen Assure Locks and Levers, Not Compatible with Yale Assure Lock 2 (YRD4XX), AYR202-CBA-KIT

The Branford History of Yale

American History in Under Three Minutes - Yale University Press