A defined lifetime
Choose the supported duration and review when the identity will expire.
Disposable Hats
Create a short-lived Hat for a contact, project or handoff. Keep that exchange separate from the identity you use for longer-term work.
No phone number or email required for core Hat use.

The useful difference
Choose the supported duration and review when the identity will expire.
Share the temporary Hat with the people involved in that exchange.
Free use includes starter limits. Premium offers more capacity and longer durations where available.
How it works
Open the relevant Hat creation action in the messenger.
Give the intended contact the temporary Hat ID or supported contact route.
Preserve information you are required to retain through an approved process before the Hat expires.
Know the boundary
A disposable identity is not a guarantee of anonymity or forensic erasure. Recipient copies, device state, connection data and details you disclose can still identify an exchange.
Review the security evidenceQuestions, answered
Open City of Hats to review the controls available for your client, content and plan. The app shows applicable requirements before you proceed.
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
Start with a Hat
Start free. Choose your controls as the work requires them.