Give your laptop a strong sign-in credential, require authentication after inactivity, and lock it manually whenever you step away. Windows and macOS have built-in settings for all three; the exact controls depend on the operating-system version.
Start with a sign-in method that protects the laptop
Make sure your Windows or Mac user account requires a strong password or another supported sign-in method to unlock the computer. Windows supports a password or Windows Hello, when available. Apple’s device-security guidance likewise recommends requiring a strong password on a Mac. See Microsoft’s device-security guidance.
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The platform guidance cited here does not specify a minimum length, character mix, or passphrase formula, so there is no specific recipe to attribute to Microsoft or Apple. The practical requirement is that the account has a sign-in credential and that the laptop asks for authentication when you return.
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Require sign-in when waking from sleep
- Open Start > Settings > Accounts > Sign-in options.
- Under Require sign-in, choose the option to require sign-in when Windows wakes from sleep.
- Set an inactivity period in Windows display and sleep settings. Microsoft says 10 or 15 minutes is usually a good interval, while advising users to choose what works for them. The cited guidance does not identify a publication year for this recommendation. Microsoft’s guidance
You can have Windows turn off the display without putting the whole PC to sleep; Microsoft says the display alone can activate the lock. Sleeping the whole PC may also save electricity.
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Optionally require sign-in when a screen saver resumes
- Go to Settings > Personalization > Lock screen > Screen saver.
- Set the screen-saver Wait time.
- Check On resume, display logon screen, then apply the change.
The Settings presentation may vary between Windows versions. Microsoft’s screen-saver instructions cover Windows 10 and Windows 11.
Lock Windows immediately before stepping away
Press Windows logo key + L to lock the screen manually. This is useful when you leave before the automatic inactivity timer expires. Microsoft documents the shortcut.
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- Superior Privacy and Anti Glare - Our advanced multi-layered film filter blacks out your screen when viewing from the side, while maintaining a crystal clear screen straight-on. It also protects your eyes from harmful glare, UV, and blue light. [Note: It does not block visibility directly behind you, regardless of the distance.]
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Set automatic locking on a Mac
macOS Ventura 13 or later
- Open Apple menu > System Settings > Lock Screen.
- Set when the display turns off for battery use and power-adapter use, as appropriate for how you use the Mac.
- For Require password after screen saver begins or display is turned off, choose when the Mac should require a password. A shorter delay asks for authentication sooner; Apple does not prescribe one universal delay.
Apple describes these controls in Change Lock Screen settings on Mac.
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On older releases, Apple documents the equivalent control under System Preferences > Security & Privacy. Labels and layout vary by release; see Apple’s password-after-wake instructions for the older control.
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- 【Filter Dimensions】: Width: 13.56" (344.5 mm), Height: 8.49" (215.6 mm), Diagonal: 16" (406 mm) - SightPro Blackout Privacy Filter is engineered to be compatible with Lenovo, HP, Dell, Acer, Asus, Samsung, and other laptop brands. Please verify your screen's width and height measurements before ordering. It's not recommended to make your selection based solely on your screen's diagonal size. [Not optimized for touchscreens.]
- 【Superior Privacy】- Our advanced multi-layered film filter blacks out your screen when viewing from the side, while maintaining a crystal clear screen straight-on. It also protects your eyes from harmful UV and blue light. [Note: It does not block visibility directly behind you, regardless of the distance.]
- 【Perfect for Travel and Open Workspaces】- The Laptop Privacy Screen Filter is the ideal solution for healthcare providers, mobile workers, commuters, students, and business travelers. Now you can stay compliant and safeguard sensitive corporate information while working in airplanes, subways, airports, and public areas.
- 【Package Contents】- Each package includes a magnetic privacy screen filter, magnetic stickers, a webcam privacy cover, a storage folder, and a cleaning cloth. Buy with confidence – located in the US, Sight Pro specializes in providing best-in-class privacy solutions to individuals, small businesses, corporations, government, and educational institutions. Our privacy screens are Section 889 and TAA compliant.
Choose a timing that fits how you use the laptop
The setting that matters is the time between walking away and the device requiring authentication. On Windows, Microsoft’s 10- or 15-minute suggestion concerns the idle period before sleep; the screen-saver route offers a separate wait time. On Mac, the display-off interval and the password delay are separate controls. Choose a delay short enough for the places you use the laptop, while accounting for how often you pause to read or work without touching it.
If a timing control is unavailable or cannot be changed, an organization may manage it through device policy. Microsoft notes that policy can disable a Windows reauthentication setting in its Windows sign-in options accessibility guidance.
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- 【Two Attachment Options】- Installs in minutes. Option 1 uses clear adhesive strips that securely attach to any screen. Option 2 uses slide mount tabs that easily stick to the display frame, allowing you to slide the filter on and off the screen as needed.
- 【Superior Privacy and Reduce Glare】- Our advanced multi-layered film filter blacks out your screen when viewing from the side, while maintaining a crystal clear screen straight-on. It also protects your eyes from harmful glare, UV, and blue light. [Note: It does not block visibility directly behind you, regardless of the distance.]
- 【Perfect for Travel and Open Workspaces】- Our computer screen privacy filter is the ideal solution for healthcare providers, mobile workers, commuters, students, and business travelers. Now you can stay compliant and safeguard sensitive corporate information while working in airplanes, subways, airports and public areas.
- 【Package Contents】- Each package includes one privacy screen shield filter, two sets of clear adhesive strips, two sets of slide mount tabs, and a microfiber cleaning cloth. Buy with confidence – located in the US, Sight Pro specializes in providing best-in-class privacy solutions to individuals, small businesses, corporations, government, and educational institutions. Our privacy screens are Section 889 and TAA compliant.
Understand what an automatic lock does—and does not do
Automatic locking reduces the chance that someone can use an unattended laptop without signing in. It is not a complete defense against physical access: Apple specifically cautions that locking a Mac does not prevent someone from turning it off or restarting it. Save work before walking away if the apps you are using do not save automatically. Apple’s password-after-wake guidance
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Best Value
- 【Instant Snap-on Magnetic Attachment】- The Patented Magnetic Privacy Screen – Protected by U.S. Patents 9,829,669 and D844,012. Simply place the privacy screen along the top of your MacBook and let the magnets attach along the top. No need for tricky placement, messy tape, or damaging adhesive. Easily remove and reattach when you need it.
- 【Filter Dimensions】: Width: 12 3/16" (310 mm), Height: 6 7/8" (175 mm), Diagonal: 14" (355.6 mm) - There are two different 14 inch screen sizes, please select the correct one. SightPro Blackout Privacy Filter is engineered to be compatible with Lenovo, HP, Dell, Acer, Asus, Samsung, and other laptop brands. Please verify your screen's width and height measurements before ordering. It's not recommended to make your selection based solely on your screen's diagonal size. [Not optimized for touchscreens.]
- 【Superior Privacy】- Our advanced multi-layered film filter blacks out your screen when viewing from the side, while maintaining a crystal clear screen straight-on. It also protects your eyes from harmful UV and blue light. [Note: It does not block visibility directly behind you, regardless of the distance.]
- 【Perfect for Travel and Open Workspaces】- The Laptop Privacy Screen Filter is the ideal solution for healthcare providers, mobile workers, commuters, students, and business travelers. Now you can stay compliant and safeguard sensitive corporate information while working in airplanes, subways, airports, and public areas.
- 【Package Contents】- Each package includes a magnetic privacy screen filter, magnetic stickers, a webcam privacy cover, a storage folder, and a cleaning cloth. Buy with confidence – located in the US, Sight Pro specializes in providing best-in-class privacy solutions to individuals, small businesses, corporations, government, and educational institutions. Our privacy screens are Section 889 and TAA compliant.
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