This guide describes Silent Key’s actual product model and the general privacy concepts around it. It avoids guarantees the service cannot technically make.
Why notifications are useful
Browser notifications can alert a user to a new message while the Silent Key tab is not active. The application asks for permission and stores the user’s preference locally in the browser. Notifications are optional; chat delivery does not require them.
The convenience comes with a privacy cost. A notification can appear on a lock screen, smartwatch, notification history or shared desktop. The operating system, browser and anyone looking at the screen may see the sender name or preview.
Permission belongs to the browser
Silent Key cannot silently grant itself notification access. The browser controls the permission prompt, and a denial must usually be changed in browser or operating-system settings. Enabling notifications inside the app records the preference only after the browser grants permission.
Because permission is device- and browser-specific, enabling it on one laptop does not necessarily enable it on a phone. Clearing site data may also reset the local preference.
Shared-device risks
On a shared family computer, school device or work machine, notification previews can reveal conversations after the user walks away. Browser profiles help separate sessions, but they are not a substitute for logging out and locking the device. If the operating system shows message content on the lock screen, consider disabling previews or notifications entirely.
A private chat interface cannot protect text that the operating system displays outside the interface.
Notification content and timing
A notification is a convenience signal, not a guaranteed delivery receipt. Background restrictions, battery saving, browser suspension or network loss can delay or suppress it. Duplicates can also occur if multiple tabs or devices observe the same event without careful coordination.
Users should open the app to confirm the current conversation rather than relying on an old notification. Temporary message expiry may remove content from the normal interface even though a notification preview remains in device history.
Safer settings
Enable notifications only on devices you control. Review lock-screen preview settings. Use a device PIN or biometric lock. Disable notifications before lending the device. Log out of Silent Key and the associated Google account on shared browsers. Periodically review browser site permissions and remove access that is no longer needed.
When privacy matters more than speed, leaving notifications off is a valid choice. The app remains usable; the user simply checks it manually.
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