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Questions, answered clearly.

Everything creators and players need to know before building a virtual lock.

What is a virtual lock?
A virtual lock is an interactive web challenge that protects hidden content. The creator chooses a lock, defines the correct answer and adds content to reveal. Players open a link or QR code, solve the challenge and unlock the content in their browser.
Do players need an account or an app?
No. Players open the shared link on a phone, tablet or computer and solve the lock directly in their browser. Only the creator needs an account, and only to save and publish.
Can I build one without signing up?
Yes. You can pick a lock, set the answer, add the reveal and test the whole thing before creating an account. The draft stays on your device, and an account is only needed to save it, publish it and get its link.
What can I hide behind a lock?
On every plan: text, a link, an image, a promo code, an action button, sanitised HTML or the next clue in a chain. An Event Pass or Pro adds files, PDFs, downloads, audio, video and several items in one reveal.
Is the free plan limited by how many people play?
No. Players and attempts are unlimited on every plan, free included. The free plan is bounded by what you can build: 3 locks and 1 multi-step lock of up to 3 steps. Everything you publish keeps working for as many players as you send to it.
What happens when I reach the free plan's limits?
Nothing you built stops working. When you try to create a fourth lock or add a step past the ceiling, the app offers the Event Pass, $9.90 once for 10 locks and a 8-step trail over 30 days, or Pro, with no limit. Your existing locks, single or multi-step, and their links are untouched either way.
How is the correct answer protected?
Typed and tapped answers are stored as bcrypt hashes and checked on the server. A GPS position or a Wordle word stays on the server too, so the correct answer is not sent to the player's browser with the page, and attempts are rate limited per IP address. The one exception is a melody to repeat, which players have to be able to hear.
Will my reveal show up in search results?
No. Player pages are noindex by default, which keeps a personal photo, an announcement or a client document out of search engines.
Can a lock be a melody?
Yes, and it is free. The musical lock can ask players to repeat a melody on an on-screen piano, or to name the song after listening to it. Pick one of 30 built-in melodies across three levels, or compose your own. Only the notes and their order count: the rhythm is not marked, and the same note played an octave higher or lower is accepted.
Can I send the link to a list of people and see who played?
Yes, with an Event Pass or Pro. Paste addresses or import a CSV, and each person receives their own link by email, up to 200 at once. You then see who opened it, who played and who finished. Pro also keeps named contact groups, such as a class or a team, for the next invitation.
Can I limit how many people win a reward?
Yes, on Pro. Set a maximum number of winners: everyone can still play, and once the rewards are gone, later players see a sold-out message you can write yourself. You choose whether the remaining count is shown, and you can still give the lock an opening and a closing date.
How much does Lock Challenge cost?
Three ways in. Free includes all 12 formats, 3 locks, one multi-step lock of 3 steps and unlimited players, forever. The Event Pass is $9.90 paid once and covers one event for 30 days: 10 locks and a 8-step trail, every look, animation, typeface, drawn object and premium scenario, your own pictures, audio and video reveals, sudoku and Wordle locks, email invitations with per-person tracking, and no branding. Pro is $14.90 per month or $118.80 per year, with unlimited locks and steps for as long as you subscribe, and adds what running an event needs: detailed results, CSV export, player emails, timed challenges with a clock for the whole game, an optional clock per step and one play per device, access codes and player caps, scheduling, the live dashboard and leaderboard, the printable QR pack, a cap on winners, duplication, your own logo, embedding and commercial use.
What happens when my Event Pass ends?
A pass is paid once and never renews by itself. When its 30 days end, the experiences you built under it stop opening for players and show them a line saying so. Nothing is deleted, the links keep working, and taking another pass or subscribing to Pro reopens everything at once. Anything you built outside a pass, on the free plan, is never affected and stays open forever.
What happens if I cancel Pro?
Pro stays active until the end of the period you already paid for, and nothing is charged after that. The account then returns to the Free plan: nothing is deleted, but the locks and games built during Pro stop opening for players, who see that the lock has expired. If you move to an Event Pass instead, everything the pass covers keeps working and only the locks that use Pro options, or go past the pass limits, are disabled. Taking Pro again reactivates all of it at once.
Which languages are supported?
The whole site, the dashboard and the player interface exist in English, French, Spanish, Catalan and Portuguese. An experience plays in the language of the site version you built it in, so a lock made from the French site shows players a French interface. There is no language switch on the player page.