These cool new Master Lock Bluetooth Smart Padlocks unlock themselves automatically with a simple tap on your smartphone instead of screwing around with easy to lose keys and difficult, hard to remember combinations. Just download the free Master Lock Vault eLocks app on your iOS or Android device, pair it with the lock, and enjoy easy access, tamper alert notifications, access history, low battery alerts, and you can even share temporary or permanent access with others. If wireless Bluetooth is not available because your phone died or something, it also allows backup access through a directional code (up/down/left/right) on the lock's keypad. It comes in either a rugged, weather-resistant outdoor version that's great for sheds, gates, bikes, and more or an indoor version that's perfect for lockers, cabinets, toolboxes, etc. Check out this VIDEO to see it in action. Cool huh?