Lock Challenge lets anyone build a virtual lock: a puzzle players solve on their phone to open a hidden reward (a message, photo, video, link or the next clue). Pick from 15 lock types (numeric code, written answer, directional, touch pattern, colour sequence, switches, musical sequence, GPS position and more), chain locks into a full escape game, add hints, and share by link or QR code. Pro adds timers and a live leaderboard. Teachers use it for classroom breakouts, escape-room owners put QR locks on props, and people use it for birthday surprises, proposals and team building. Players need no account. Basic locks on the free plan never expire.
Building printable escape games for classrooms and parties took hours and needed physical padlocks. I wanted anyone to build a playable lock in minutes and share it with a link or QR code, with no account needed for players.