Have you ever returned to your home because you cannot remember if you locked the doors? Well, now there is a solution for this inconvenience. Its world’s first smart key called Locky. To start using the smart key you do not need to replace your lock, because Locky is just a minimalist key overlay, which tracks your key usage and sends the data to the mobile app, keeping you in control 24 hours a day. Another great overlay function is to track the keys if you lost them. Feel safe about your citadel anytime anywhere!