Meet BluKey: a wireless entry system that lets you control your door from your smartphone. You can add it to any standard door and check its status when you are not home. BluKey responds to touch and searches for a synced phone to unlock automatically without you having to grab your phone.
The developers are using encryption for your protection. The companion app is available for iOS and Android devices. To get started, simply attach BlueKey to your door deadbolt using the built-in grips, install the companion app, and you are ready to go.[where to get it]