Create a link and send it in any messenger. Your guest opens the call in the browser, with nothing to install and no sign-up. The call is encrypted from device to device: video goes directly, and our server never sees it.
We are preparing the first release. Soon you can start a call right here.
Encrypted from device to device
The call key is delivered under post‑quantum protection
Encrypted device to device
Instead of a cryptic badge, Lichca says in words who can see the call: “Only you two”, “Only you three” or “Only the 4 devices in this call”.
From device to device. Our server only passes short setup messages and never sees the video.
Each pair of devices makes sure it is connected to the other one, not to someone in between. No codes to compare by hand.
Your guest receives the call key under post‑quantum protection. In this first version the video itself uses classic encryption.
The room key is sealed to the guest with hybrid X25519 + ML-KEM-1024. Together with the link secret it derives the call key, which each pair uses to authenticate the other’s DTLS fingerprint. Media is encrypted with DTLS-SRTP (classic ECDHE). A post‑quantum layer for the media itself is planned for version 0.2.
Knock to enter
Your guest opens the link, checks the camera and taps “Knock”. You see their name and choose: “Let in” or “Decline”.
Links from messengers
Inside a messenger’s built-in browser the camera may not start. Lichca notices at once and shows the way out: an “Open in Chrome” button on Android, two steps to Safari on iPhone.
And if that does not work, you can still join to watch and listen.
If the network blinks, Lichca tries to restore the connection by itself and tells you on screen what is happening.
Coming
Today your decision is what lets people in. Next come checks, and you will see what is confirmed next to each name.
A check that a real person is in front of the camera, not a recording.
A short check during the call that the person is the one you let in.