You keep your iPhone with you all of the time. Now you can use your phone as a password with Knock. You never have to open the app – just knock on your phone twice, even when it’s in your pocket, and you are in!
Knock is a pair of apps: one for your iPhone, and one for your Mac. The two apps create a private, secure connection with each other via Bluetooth Low Energy. When you’re near your locked computer, Knock for Mac detects your iPhone. After a few security checks, the ring around your avatar pulses green, letting you know your Mac is safe to unlock. When you see the green ring light up, knock twice on your iPhone – just like you’d knock on a door – and Knock automatically enters your password.
Although, you may be asking yourself: if my Mac knows my iPhone is there, why do I have to Knock? In security speak, this is called a Signal of Intent. In regular words, knocking is a natural way to confirm you’re ready to unlock your Mac. Since you can knock on your phone even when it’s in your pocket or purse, knocking is a super low-effort way of avoiding those embarrassing “oh no what did I leave open on my Mac” moments.
Nowadays it is important to start locking up your laptop. Did you know that anyone with access to your Mac can easily see all your saved usernames and passwords in less than 10 seconds without doing anything illegal? Leave for 3 minutes to grab a snack and an average person with no technical knowledge can clean out your bank account. Unbelievable, right? This, unfortunately, is just one lonely drop of water in a sea of reasons to keep your Mac locked when you’re not around. So if you do just one thing to try and keep your stuff safe, it should be locking your computer.