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Have you ever wanted to send hidden, personal notes to friends that feel far more special than plain text?
For this year’s Config Makeathon, I built Secret Letter Workshop — a web-based cipher workspace to write, encrypt and decode private parchment-style messages.
More than a regular encryption tool, it is a fun space for people to create and share private messages together.
Two ways to create your secret note
🔹 Pre-built cipher presets: 5 ready-to-use encryption algorithms. Pick one instantly to encode and decode your secret messages without setup.
🔹 Custom cipher builder: Design your unique encoding & decoding logic from scratch, fully tailor the secret rule to your own exclusive symbol system.
Where you can use it in daily life
🔸 Pass private little notes to close friends without anyone else reading them
🔸 Hide soft personal thoughts inside your digital journal, locked behind simple cipher logic
🔸 Write hidden surprise notes for birthdays, anniversaries and meetups
🔸 Create exclusive coded messages for small friend meetups or trip group chats
Tools
• Brainstorming & Image generation: Gemini
• Style inspiration: Pinterest
• Design & Vectorize: Figma design
• Website development: Figma Make
🧐 The dancing silhouettes carry a Victorian detective’s secret script
😶🌫️ Unlocking text is a mirrored way to lock it
Thanks Monic! ❤️
Cool
Thank you Boluwatife!
Beautiful execution
Thank you, Sohan!
The network for creativity
Join 1.25M professional creatives like you
Connect with clients, get discovered, and run your business 100% commission-free
Creatives on Contra have earned over $150M and we are just getting started
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