Lock 🔒

🔒 (U+1F512) is a standard Unicode character that you can copy and paste anywhere text is accepted. This page provides a concise reference with safe tips, internal links, and practical guidance so you can use it reliably across apps and platforms.

What it is and where it’s used: Lock is part of the Symbols family (block: Miscellaneous Symbols and Pictographs). If you need styled or decorative alternatives, try our Fancy Text tool to generate compatible text that works in most modern interfaces.

History & usage: LOCK depicts the lock symbol. It represents security, privacy, or restricted access. In messages, use LOCK to indicate a private detail or a secure action, such as confirming a password or guarding sensitive information. In interfaces, it can mark restricted content or a secure setting, like an encrypted connection or a protected option. In collaboration, it signals that a file, folder, or link is gated or requires permission to view. For accessibility, pair LOCK with clear surrounding text so readers understand the intent. Cross‑platform appearance can vary; some colors or styles may look different in various apps. Ensure the surrounding text communicates the meaning if the emoji is not colorized or if a monochrome fallback is shown.

Copy and input: the quickest method is to copy the character here. You can also insert it by its codepoint U+1F512 in many development tools or editors. Some operating systems provide a character viewer or input palette that lets you search by name or code and insert the glyph into documents.

Display and fallback: if you see an empty box (tofu) or a placeholder rectangle, the active font might not include this codepoint. Switching to a font with broader Unicode coverage or using a fallback font usually fixes the issue. On the web, ensure the page’s font stack includes a general‑purpose fallback.

Related references: browse the Categories for similar characters. When choosing a symbol, prefer the official codepoint for semantic clarity and better compatibility with search, copy, and accessibility tooling.

See our category page for related symbols.