The Ultion Nuki Plus can be operated in multiple ways, including keycodes, voice commands, the Nuki app, key fob,fingerprint accessand a police-approved key with Apple Find My technology. The Ultion Nuki Plus is also compatible with Ring, Alexa, Google Assistant and Apple HomeKit. The level of protection required by insurers to secure a home depends on a number of factors, such as the type of insurance policy taken out, the value of the furniture and other items to be covered, and the vulnerability of the home to theft. Insurance companies generally offer cover against burglary, provided that the residents of the home take all the necessary steps to minimise the risk of break-ins. Like the Conexis L1, you can open the Keyless Connected with NFC cards or key fobs (one of each included), and there's also a pin pad for keyless entry. Access restrictions for both methods are configured on the pad itself; you can add up to 20 tags and 20 codes at once. There are time-limited codes, too, allowing you to set up access for a 24-hour period. It's easy enough to install, though the included instructions aren't tremendously detailed, and the online video guide, while sharp enough, does leave a couple of aspects a little muddy. We didn't struggle, put it that way, though it did take an hour and a half to get everything perfect.

The Conexis L1 tells you its status via a series of ear-splitting beeps; necessary, we suppose, but they could be a little more pleasant. They come in extra-handy when the battery is running low – you can't miss the alert – particularly because there's no way to see the current battery level through Yale's mobile app. About the Igloohome app: it's excellent. It's particularly well presented, making management of PIN codes for limited or permanent access a breeze, and you can use it to generate Bluetooth keys and send them on even when you're out of range of the unit itself. That's management gold, and easy enough for even first-timers to use. Igloohome's Airbnb integration is an extra bonus, enabling you to line up keys for all of your forthcoming bookings automatically.