How to Create a Digital Time Capsule (That Actually Stays Private)
A digital time capsule is a collection of photos, videos, messages, or documents that you seal today and deliver to someone — or yourself — at a specific moment in the future.
A birthday. A graduation. Ten years from now.
The idea is simple. Until recently, the execution hasn't been.
The Problem With Most Digital Time Capsules
Search "digital time capsule" and you'll find two types of solutions.
The first is novelty apps — write a letter, and they'll email it to you later. Nice idea, but your message sits unencrypted on someone else's server. If the company shuts down, your data is gone. If it doesn't, your data still isn't truly private.
The second is cloud storage. Upload files to Google Drive, Dropbox, or even an encrypted provider. Set a reminder. Share it later.
This works — but only if everything goes right: you remember, your credentials are accessible, your links still work, and the structure still makes sense years later. In practice, it's fragile.
Neither approach gives you what a time capsule actually needs: true encryption — content protected even from the platform — and automatic delivery — content reaching the right person at the right time without relying on you.
That's what Brianni was built to solve.
What You'll Need
Before you start, you'll need your content (photos, videos, messages, documents), a recipient (someone else or yourself — no account required), a delivery condition (when it should arrive), and a challenge question (how it will be unlocked). That's it.
Step-by-Step: Creating Your Time Capsule on Brianni
1. Add Your Memories to the Vault
Everything starts in your vault — your private encrypted space.
Upload your files: photos, videos, scanned letters, notes. Add titles, descriptions, or tags if you want to stay organised.
Your content is encrypted the moment it leaves your device using AES-256-GCM. Brianni stores only encrypted data — it cannot read or preview what you upload.
This is what zero-knowledge means in practice.
2. Create a Package
A package is your time capsule.
It's a sealed collection of vault items, a recipient, delivery rules, and a challenge question.
Create a new package and choose your recipient (name + email or phone), select your items (photos, videos, messages), and define when it should be delivered.
3. Choose When It Arrives
This is where Brianni differs from traditional storage.
You can choose how your capsule is delivered: Scheduled Date for a specific moment in time, Age-Based for when someone reaches a milestone age, Recurring for repeat deliveries (monthly, yearly), Immediate to send now, or Manual Trigger when you want to decide later. For most time capsules, Scheduled Date works best for events and Age-Based for long-term milestones.
4. Set the Challenge Question
This replaces a traditional password.
You write a question only your recipient can answer — something like "What was the name of our dog?" or "Where did we first meet?"
The answer is never sent to the server. Instead, the recipient enters it locally, a decryption key is derived on their device, and the content unlocks only if it matches.
Brianni also handles reasonable variations (e.g. casing, spacing), so correct answers don't fail unnecessarily.
5. Add a Cover Note (Optional)
This is the message your recipient sees at the top of the package after unlocking. Think of it as the note on the outside of the envelope — "Happy 18th birthday…" or "Open this with a cup of tea." It's encrypted along with everything else.
6. Review and Seal
Review everything — recipient, items, delivery condition, and challenge question — then seal the package.
From this point, encryption is finalised, the package is scheduled, and delivery is handled automatically.
What Happens When It's Delivered
When the condition is met, your recipient receives a secure link. They open it in any browser, answer the challenge question, and the content decrypts locally on their device. No app. No account. No friction.
Access can also expire after a defined window for added security.
Real Examples
A letter to your future self. Add yourself as the recipient. Write something honest about where you are today — your fears, your hopes, what you're working on. Set the delivery date for five or ten years from now. Choose a challenge question only you'd know. When it arrives, it's a conversation with a version of yourself that no longer exists.
A birthday message that never gets forgotten. Record a video, add a few photos from the trip you took together, write a note. Set the delivery to their birthday, in their timezone. They wake up to a notification with a secure link. No scheduling conflicts, no "sorry I forgot to call." The capsule does the remembering for you.
Monthly updates for a long-distance partner. Set up a recurring package — one encrypted delivery a month. Each with its own challenge question. A ritual that doesn't depend on either of you being online at the same time.
A milestone gift across generations. A grandparent records a video and writes a letter for their grandchild's 18th birthday. They set the delivery type to Age-Based, enter the child's date of birth, set the target age to 18. Even if the grandparent isn't around to hand it over in person, the platform delivers it on time — encrypted, exactly as it was sealed.
Why This Is Different From Email Scheduling
Encryption. Emails are stored in readable form by providers. Brianni encrypts everything client-side.
Delivery logic. Email scheduling is date-based. Brianni supports dates, milestones, recurrence, and conditional logic.
Access control. Emails are readable by anyone with inbox access. Brianni requires a challenge-based decryption step.
Getting Started
Brianni is free to start — 10 GB of storage, up to 50 items, and up to 5 recipients. You can create your first time capsule in minutes.
Start at brianni.co.
The idea of a time capsule has always been simple: preserve something meaningful and let it arrive at the right moment.
Now it finally works the way it should.