Kwikset Kevo 99250-001 Polished Brass Smart Lock with Bluetooth enabled deadbolt for iPhone 4S, 5, 5C & 5S, 6 and 6 Plus

With Kevo, all you need is a smartphone to unlock your door. You don't even need to take your phone out of your pocket or purse; just touch your lock, it will recognize your phone and unlock the door. No more fumbling for your keys or memorizing a code... just touch the lock to open.
Compatible with Apple iPhone 4s and 5 only.

The Kevo Fob, included with the lock, offers the same touch-to-open technology and convenience. Leave your fob in your pocket or purse and when you touch the lock, it will be recognized and unlock the door. Additional Kevo Fobs will be available for purchase.

The key has evolved! Now you can send an electronic key (eKey) to family, friends, or visitors who have a compatible smartphone, so they can use their phone as a key too. It all starts with the Kevo mobile app that you can download for free from the Apple store. This app allows you to set up your Kevo lock, send, disable or delete eKeys, as well as manage Kevo fobs

Kevo is only compatible with smartphones that support Bluetooth Smart Ready/Bluetooth 4.0 hardware and have an available Kevo app. The Kevo app is currently available for iPhone 4s & 5, as well as the fifth generation iPod touch, third generation or higher iPad and iPad mini. We have plans to support all possible mobile devices. Currently Android 4.3 and Blackberry 10.1 do not fully support all Bluetooth LE features required by Kevo, but we hope they will soon. When they do, we will be ready! You can still enjoy touch-to-open entry with a key fob and migrate to your Android device when available. The Kevo lock does not only rely on the built-in encryption available in Bluetooth. Kevo also provides multiple levels of military grade PKI encryption. The Kevo lock operates on 4 AA-batteries and with normal use, the batteries should last for a year before needing replacing. The lock provides multiple low-battery indicators and provides plenty of warning to change batteries. In the event that the batteries are not replaced in time, you will need to use the standard key to unlock the door. No, the Kevo lock has a unique, patent pending feature to detect if the authorized user is inside or outside of the house, so there will be no accidental unlocking from an unauthorized user outside. The Kevo App needs Location Services and Bluetooth to be on, which do use some battery power (you would already be using this if you use other mapping apps or Bluetooth devices). The Kevo App is designed to take advantage of the new ultra-power-efficient Bluetooth Smart Ready Technology, so you shouldn't notice a decrease in your phone's battery life. Simply log into the Kevo app on another smartphone or into the Kevo web portal and disable or delete any eKeys associated with the lock. You will need to use your Kevo Fob or the standard key to unlock the lock until you retrieve or replace your phone.