8 Ways to Lock Your Mac Feb 8, 2021, 10:24 am EDT | 4 min read Locking your Mac is the best way to secure your computer when you have to step away from it. This won’t quit or interrupt any running applications, and you must type your password to get past the lock screen. Here are eight ways to lock your Mac. First, Require a Password to Unlock Your Mac There are many ways to lock your Mac. Some of these methods involve actually putting your Mac to sleep. However, this does little to protect your Mac if a password isn’t required to access it again. For maximum security, we recommend you always require a password after putting your Mac in sleep mode.