LockLines

LockLines is a macOS app for designing plain-text lock screen messages that fit the small message area macOS gives you. The app is built around a simple idea: the text that appears on a locked Mac should be readable before someone ever reaches the desktop. LockLines lets you write that message, preview how it will actually appear, and copy a finished, paste-ready result into macOS Lock Screen settings. It follows the same workflow shown in its screenshots — visible text, scroll text, preview, copy — and it is aimed at anyone who needs the lock screen to carry context: owner notes, contact information, asset labels, test machines, shared Macs, or any other message that needs to be understood by whoever is looking at the locked screen. The problem LockLines addresses is that the message area on a macOS lock screen is small, and it is easy to write something that does not fit or does not read well once it is in place. A message can end up cut off, with the important part hidden where nobody sees it. LockLines grew out of experiments with an OnyX lock screen option, which led its developer to try multiline messages, aligned text, and scroll-down owner details, and eventually to build a dedicated app for the job. The result is a tool that treats the lock screen message as a design problem: what appears first, what appears after scrolling, and how the whole thing reads at a glance before someone types a password. The first part of the workflow is the visible message — the text people see before they scroll. In LockLines you shape that first-screen message directly, writing a short prompt, a return instruction, or an owner contact teaser that fits the limited space macOS provides. The editor pairs your text with a lock screen preview, so you can see the first-screen message in context instead of guessing how it will look. The visible message editor screenshot shows a first-screen message with repeated-character border controls, which means you can decorate the plain text with borders built from repeated characters so the message stands out inside the small area. That decoration matters because plain text offers no bold, color, or font size — repeated characters are one of the few ways to create visual structure that survives the transfer to the lock screen. Below the first-screen message, LockLines lets you add scroll-down details. These are the longer pieces of text that appear after someone scrolls through the lock screen message: a fuller owner note, pickup instructions, an asset label, or test-machine details. Keeping this content in a separate scroll area means the initial message can stay short and readable while still carrying richer information for anyone who scrolls. The scroll text editor is shown alongside a lock screen preview as well, and the screenshots describe scrollable message details with styled plain-text boxes, so longer text can still be organized and visually separated using nothing more than plain characters. This separation between the first screen and the scrollable area is what allows both a quick-glance prompt and a detailed note to coexist in one message. A central capability is the ability to preview both states. LockLines separates the first visible message from the scrollable details and then shows each of them inside a lock screen preview, so you can switch between visible and scroll previews and understand the layout before copying anything. Because the output is plain text, what you see in the preview is what will end up on the lock screen — there is no rich formatting layer that might not survive the transfer. Decoration is handled the same way, through repeated characters and styled plain-text boxes, which keeps the message compatible with the plain-text field macOS expects. The app also includes an intro screen with an app explanation: an intro walkthrough explaining the plain-text lock screen workflow, so a new user can see the intended process before writing anything. The overall approach is a four-step workflow: write the first screen message, add scroll-down details, preview both states, and copy for System Settings. LockLines does not attempt to manage your system settings for you; instead, it produces the final plain-text message and hands it to you ready to paste. You copy the complete message and paste it into macOS Lock Screen settings yourself. That deliberate, transparent handoff keeps the tool predictable and keeps you in control of what actually gets applied to the machine, which suits users who prefer native utilities that do one job cleanly rather than tools that reach deeper into the operating system than necessary. The benefit is that a locked Mac stops being anonymous. A good lock screen message can turn a found device, a shared asset, or a test machine into something understandable. Instead of an unexplained login window, the person standing in front of the Mac sees a return prompt, an owner contact, or an asset label, and can act on it immediately. For anyone who manages machines, the payoff is fewer unanswered questions and less time spent identifying hardware, because the context travels with the device and is visible before anyone reaches the desktop. The scroll-down area adds a second layer: the short visible line can point to more detail that is available for those who need it, without cluttering the first screen. LockLines is useful anywhere a locked Mac needs context. It is used for lost Mac return instructions, so a found device can guide its way back to its owner. It is used for owner contact notes and for school and office asset labels on shared hardware. It fits conference or demo machines that pass through many hands and need a visible label. It suits repair intake or lab devices that should be identifiable while they sit on a bench. And it supports scroll-down prompts for longer messages, where the short visible line points to more detail that appears after scrolling. In each of these scenarios the app serves the same purpose: making the machine explain itself to whoever is standing in front of it. LockLines is available as a download on the Mac App Store, and the website also offers a support contact route for users who need help. It is made by Ihor July, a cybersecurity expert and reverse engineer focused on secure, privacy-respecting macOS tools; the same developer also builds Parall, DockLock Lite, App Trust Preview, and App Archiver for Mac users who care about predictable native utilities. The developer has written about the origin of the app in My Mac Apps Story, Part 5, describing how an OnyX lock screen option led to experiments with multiline messages, aligned text, and scroll-down owner details, and eventually to LockLines. The target audience is therefore Mac users and Mac administrators who want simple, native, privacy-respecting utilities that solve one specific problem well. LockLines exists to solve one specific, practical problem: making a macOS lock screen message fit and read well in a small space. By separating the visible message from the scroll-down details, previewing both states inside a lock screen preview, and copying a finished plain-text message ready for System Settings, it turns message design into a short, predictable workflow. For owner notes, contact information, asset labels, test machines, and shared Macs, that workflow is what makes the difference between a message nobody reads and one that is understood at a glance.