A discreet carrier
The image carries a token; the encrypted message payload is handled separately.
GhostFrame
Carry an encrypted message inside an image.
Use an ordinary-looking image as the carrier for an encrypted retrieval token. The recipient imports the image into City of Hats to retrieve the protected message.
No phone number or email required for core Hat use.
The useful difference
A clearer way to handle sensitive work.
Encrypted message content
The app encrypts the message before it is made available through the retrieval workflow.
Delivery rules you choose
Review the supported recipient and lifecycle controls when creating the GhostFrame.
How it works
Three deliberate steps.
Choose an image
Import a suitable image and compose the protected message.
Create and share
Set the available controls and export the carrier. Sharing the original as a file helps preserve its pixels.
Import and retrieve
The recipient imports the image into a supported City of Hats client and follows the retrieval flow.
Know the boundary
Choose controls with clear expectations.
Image resizing or recompression may destroy the token; do not assume every social or chat platform preserves it. Steganography does not guarantee undetectability or anonymity. An authorized recipient may retain what they read.
Review the security evidenceQuestions, answered
Before you get started.
Where can I use GhostFrame?
Open City of Hats to review the controls available for your client, content and plan. The app shows applicable requirements before you proceed.
What should I check before sharing sensitive information?
Verify the recipient, use a supported device and choose appropriate access and retention rules. Review the Security Evidence Center for boundaries and evidence status.
City of Hats is free to use. Feature availability and limits vary by plan and client. Premium is optional; review current limits in the app or on the plans page.
Explore what matters next
Build the workflow around your work.
Start with a Hat
Give sensitive work its own space.
Start free. Choose your controls as the work requires them.