The Sesame Smart Lock is a lock which allows you to use your phone as your house key, which means you no longer need to worry about remembering your key when you leave the house! Additionally, the Sesame Smart Lock allows you to easily control who has access to your home and when, as well as receive alerts and updates via your smartphones, whenever your door is opened, closed, locked or unlocked.
Furthermore, the Sesame Smart Lock is equipped with Wi-Fi connectivity, meaning it can be controlled remotely from anywhere, and even allows you to check that you remembered to lock the door before leaving. All of this, combined with the fact that the Sesame Smart Lock also allows you to create a custom knock which will unlock the door when done properly, in addition to allowing voice activated unlocking through your smartphone as well, makes this a great new smart lock for literally anyone living in the 21st century to consider.
Amazon reviewers love Sesame for a variety of reasons, one is its flexibility, which according to one user "adjusts even to the weirdest or knobs". Get it if you want a smart lock without replacing your current lock.