Locked Emoji

A closed padlock. No key, no pen, just the lock. 🔒 is the baseline of the lock emoji family, the one everyone reaches for when they need to say something is secure, private, or off limits. The other three locks (🔓, 🔐, 🔏) are all variations. This one is the original.

It has three dominant meanings in texting. Relationship status, where 🔒 in a bio has meant "taken" for almost a decade, a convention that runs deep on Instagram and TikTok. "Locked in," the Gen Z slang for hyper focus that came out of basketball culture, where announcers called defenders who were locked in on their matchup in the mid-2000s. Privacy, from protected social accounts to HTTPS padlocks to end-to-end encrypted chats.

Approved in Unicode 6.0 (2010) at codepoint U+1F512 under the name LOCKLOCK. It was one of the first utility emojis in the standard, borrowed from Japanese carrier sets that used padlocks to flag private or secured features on mobile phones in the late 1990s. Fifteen years later it's everywhere: browser UIs, dating bios, study grind captions, and the occasional NDA joke.

Start with relationships. 🔒 in an Instagram or TikTok bio is the single most common way to signal "I'm in a relationship" without spelling it out. The convention pairs it with a date, for example "🔒 06.14.23" meaning "locked down since June 14, 2023." Swapping from 🔓 (single) to 🔒 in your bio is basically a silent relationship announcement. The reverse is a silent breakup. Users take the convention seriously enough that shifting the emoji reliably triggers DMs.

Then there's "locked in." The phrase comes straight out of basketball. Kobe Bryant famously told reporters in 2013 he felt "more locked in now than I've been my entire career". Commentators had been using the phrase since at least the early 2000s to describe defenders who were fully dialed into their matchup. It spread from basketball to fitness culture, study culture, and eventually all of Gen Z, with 🔒 as the emoji that cinched the metaphor. Captions like "september 🔒" or "exam szn, locked in 🔒" are normal now. In 2024-2025 this usage exploded thanks to the "Great Lock In" TikTok movement.

Finally, security. For 20+ years, browsers showed 🔒 in the URL bar to indicate HTTPS. Then in September 2023, Google Chrome removed the padlock because a study found 89% of users thought the icon meant "this site is safe" when it only meant the connection was encrypted. Phishing sites use HTTPS too. The padlock was misleading people into trusting scams. As a texting emoji, 🔒 still gets used for security contexts, but its authority as an actual browser icon is gone. X, Instagram, and TikTok all still use their own padlock glyphs for private or protected accounts, though, so the broader "private" meaning lives on. X blocks 🔒 and the other three lock emojis from display names to prevent users from faking that status.

The padlock is one of the oldest security devices humans have. The earliest known pin tumbler locks date back about 4,000 years to ancient Egypt, where wooden mechanisms secured doors and chests. The Romans invented the first portable metal padlocks around 100-200 AD, with a U-shaped shackle that's basically the silhouette of the modern emoji. Chinese locksmiths independently developed their own padlock designs around the same time.

The shape that ended up in Unicode was locked in (pun unavoidable) by the Master Lock Company, founded in 1921 by Harry Soref in Milwaukee. Soref patented a laminated steel padlock in 1924, and the company became the largest padlock manufacturer in America. Prohibition was a growth engine, with federal authorities buying 147,600 Master Locks in February 1928 alone to shut down speakeasies. Master Lock's famous 1974 Super Bowl "Tough Under Fire" ad, which showed a rifle round piercing a lock that still worked, cemented the laminated-steel padlock as the archetypal lock in American culture. That's the shape most emoji designers draw from.

The digital era gave 🔒 three new lives. In 1994, Netscape added the HTTPS padlock icon to browser address bars. In the 2010s, E2EE messengers adopted the padlock for encrypted chats. And in 2015-2020, social media bios turned 🔒 into a relationship-status shorthand. Chrome killed the address-bar padlock in September 2023 after discovering 89% of users misunderstood it, but the emoji kept going strong in texting.

Approved in Unicode 6.0 (October 2010) as LOCKLOCK at codepoint U+1F512. Added to Emoji 1.0 in 2015. The lock and its open counterpart 🔓 (OPEN LOCKOPEN LOCK, U+1F513) shipped together because the subcommittee considered them a necessary pair. 🔐 and 🔏 rounded out the family in the same release. All four locks trace back to Japanese carrier emoji sets from the late 1990s, where enterprise-focused mobile phones used padlocks to indicate protected menus and encrypted SMS.

1. -2000Ancient Egyptians create the first wooden pin tumbler locks, establishing the lock silhouette↗
2. 200Romans invent the portable U-shackled metal padlock that still defines the emoji shape↗
3. 1921Harry Soref founds Master Lock in Milwaukee, eventually the world's largest padlock maker↗
4. 1928Prohibition enforcers buy 147,600 Master Locks in one February shipment to lock down speakeasies↗
5. 1974Master Lock's Super Bowl "Tough Under Fire" ad, showing a rifle round through a padlock that still works, runs for years
6. 1994Netscape adds the HTTPS padlock to browser address bars, creating the security icon that inspired billions of associations with 🔒↗
7. 2008Pont des Arts love lock tradition begins; couples attach padlocks and throw keys into the Seine↗
8. 2010Unicode 6.0 standardizes U+1F512 LOCK↗
9. 2015Paris removes ~1 million love locks from the Pont des Arts after a section collapses under the weight↗
10. 2023Chrome removes the address-bar padlock after finding 89% of users misunderstood it↗
11. 2024Gen Z's "Great Lock In" TikTok trend turns 🔒 into a productivity and grind emoji for studygram and fitness creators↗

• •For 20+ years, 🔒 was the HTTPS icon in browser address bars. Then in September 2023, Chrome killed it because 89% of users thought it meant "this site is safe" when it only meant "the connection is encrypted." Phishing sites use HTTPS, so the padlock was creating false trust.
• •Master Lock shipped 147,600 padlocks to New York City in February 1928, almost all for shutting down Prohibition-era speakeasies. The company's laminated-steel padlock design became the archetype that 🔒 is drawn from.
• •Paris removed roughly 1 million love locks from the Pont des Arts bridge on June 1, 2015 after the weight (~20 elephants) caused a section to collapse. The tradition ran from about 2008 to 2015 and made 🔒 a worldwide romantic symbol.
• •The basketball phrase "locked in" migrated from commentary to everyday slang in the 2010s. Kobe Bryant popularized it, and Gen Z cemented 🔒 as the emoji for it in the 2020s.
• •X blocks 🔒 and the other three lock emojis from display names because the platform uses its own padlock icon to show protected accounts. Let the emoji through, and every spammer would fake a verified-private badge.
• •The earliest known pin tumbler locks are 4,000 years old and come from ancient Egypt. Romans added the portable metal padlock design around 100-200 AD. The basic principle hasn't changed.
• •Master Lock's 1974 Super Bowl ad, "Tough Under Fire," showed a rifle round piercing a padlock that still worked. The ad ran for years and is considered one of the most memorable single-product Super Bowl spots ever.
• •COVID-era "lockdown" captions briefly pushed 🔒 into pandemic shorthand in 2020-2021. Searches for the emoji spiked alongside searches for "lockdown," before the relationship-status meaning reclaimed the top spot.
• •On Instagram, 🔒 next to a username indicates a private account. The icon has been there since 2010 and has trained a generation of users to read the padlock as "this person's content isn't public."

• •🔒 on a website doesn't mean the website is safe. It means the connection is encrypted. Phishing sites use HTTPS too. Chrome's own research found 89% of users got this wrong.
• •🔒 in a bio doesn't always mean in a relationship. Some people use it for private-account vibes, "don't message me," or mystery. Context and the presence of a date matter.
• •Sending 🔒 to someone does not actually lock or encrypt anything. It's decorative. The encryption is in the channel (iMessage, Signal, WhatsApp), not the emoji.

• •Kobe Bryant "locked in" (2000s-2020). Kobe Bryant became the face of the phrase, which in turn became the cultural anchor for 🔒 as a focus emoji. After Kobe's death in 2020, "locked in" became a way Gen Z invoked his work ethic.
• •Master Lock Super Bowl ad (1974+). The "Tough Under Fire" spot showed a high-powered rifle round piercing a Master Lock that still worked. It ran during multiple Super Bowls and shaped what a padlock looks like in the American imagination.
• •Pont des Arts love locks (2008-2015). At its peak the bridge held ~700,000 padlocks weighing about 20 elephants. A section of the bridge collapsed in 2014, and Paris removed approximately 1 million locks in June 2015. The tradition spread to bridges worldwide.
• •Chrome kills the padlock (2023). Google removed the HTTPS padlock after a 1,880-user study found 89% misunderstood it. The event triggered security-industry think pieces and ended a 20+ year era of the padlock as a browser UI anchor.
• •The Great Lock In (2024-2025). Gen Z's three-month productivity movement turned 🔒 into the emoji of the grind. Studygram, gym TikTok, and productivity YouTube all used it as the caption emoji of the season.

• •Codepoint: U+1F512U+1F512. Shortcode: :lock::lock: on most platforms. Unicode name: LOCK.
• •Don't use 🔒 as a security indicator in UI anymore. Chrome removed the HTTPS padlock after research showed it caused more confusion than clarity. Use text plus an optional icon.
• •🔒 is blocked from X display names along with 🔓, 🔐, 🔏. If you're scraping or generating Twitter bios, account for the removal.
• •Instagram, TikTok, Discord, and Telegram all use their own custom padlock icons for private accounts. The emoji version is recognized but doesn't substitute for their UI components.

See the full Emoji Developer Tools guide for regex patterns, encoding helpers, and more.