FeaturesHighest security standards similar to online bankingAutomatically locks and unlocks the door for youFull online access to your lock, anytime, anywhereWorks with Amazon Alexa / Google Assistant / Apple HomeKitSupports smartphone, voice, key fob and keypad unlockingTired of shuffling for keys in your pocket or purse? Turn your smartphone into a smart key, by mounting the Nuki Combo 2.0 Smart Lock for Oval Cylinders onto your existing cylinder and key locking mechanism, on the inside of your door. Lock and unlock with the smartphone or smartwatch via BluetoothYour Smartphone turns into a smart key. As soon as you enter the Bluetooth range of your smart lock, it opens your door automatically. Easily open and lock your electronic door lock from your wrist as well. The Smart Lock is easy to unlock and lock by swiping through your watch. The Nuki app is also available for the Apple Watch and Android smartwatches.Smart keys for family, friends and guestsManage home access for your family, friends, guests, tradesmen or babysitter – on a permanent, recurring, or one-time basis. Your cleaner comes every Monday from 4:00 p.m. to 7:00 p.m.? You could then grant individual, temporary access permission to your home.Always know if your door is actually closedKeep track of who locked your door and when and whether your front door is actually securely locked. The door sensor allows the Nuki Smart Lock to show not only the status of the lock cylinder, but also whether the door is open or closed, and warns you if you want to lock your door when it is still open.Security confirmed!The safety of your home has been paramount to us from day one and Nuki has therefore invested a lot of time and resources into the encryption concept. AV-Test again certified the Nuki Smart Lock 2.0 and the latest version of the app as safe Smart Home products.A few tests have been conducted in terms of local communication (in the case of Nuki, this refers to an end-to-end encrypted Bluetooth connection), the security of controlling the Smart Lock via the Internet, the security of the app overall, as well as the level of data protection. According to these, Nuki Smart Lock is the only Smart Lock that received the maximum number of points in an international comparison!