In the age of the smart lock you can give out virtual keys to anyone and everyone who needs to get into your home and who you trust not to walk back out the door with all your mobile devices in tow. And, of course, you no longer need a physical key when a PIN code or the simple presence of your smartphone will do. Automobile owners, who don't even need to remove their key fobs from their purses to make doors unlock and engines start, have enjoyed this luxury for years, and it's rather amazing that smart locks didn't become standard for homes sooner, except that people buy a new car every few years and in many cases buy a new house never. Fortunately, retrofitting an existing door for a smart lock usually requires little more than a screwdriver and some patience.
Like the majority of smart devices, the Brilong LK 310 comes with an app, which pairs with the lock via Bluetooth. You can use the password-protected app to set your own virtual key, but you can also use it to create virtual keys for others -- not just family members who live with you, but visiting relatives who are staying over and workers or petsitters who need temporary access to your home. The phone keeps a log showing you when these keys are used, so that if your mobile devices start disappearing, you'll know who the culprit is. The keys can be deleted at will, so if Aunt Sarah puts on a guilt trip on you over how you treat your mother, you can lock her out of the house permanently. (She can still knock, but you don't have to answer.) You won't even have to change the locks when you break up with your boyfriend/girlfriend.
The lock gets 3-1/2 stars on Amazon and seems to be generally liked, with one user calling it "the easiest lockset I have ever installed." However, if you want to look elsewhere, high-tech locks with virtual, deletable keys aren't hard to find. You might want to take a look at the Yale Real Living Assure Lock, the Kwikset Premis and the Ardwolf CJ8015.
They have a great free app that controls everything. I haven't had any issues or app crashes and I'm very excited about that. I'm very happy about this product so far.