Open-source notice
Jsn Cam builds on open-source software and on apps made by others. Jsn Cam is not affiliated with, or endorsed by, Telegram or WhatsApp.
Telegram
The supported Telegram is the official Telegram for Android (GPL-licensed) with an extra module embedded by LSPatch. Telegram's source code is published by Telegram at github.com/DrKLO/Telegram. To get the source of the Jsn Cam module that is added to it, ask in t.me/jsncam.
WhatsApp is a product of Meta / WhatsApp LLC. The supported WhatsApp is WhatsApp's own app with the same extra module embedded. WhatsApp can restrict accounts that use a modified app, so use a spare number.
Tools
Patching uses LSPatch (GPL), a fork by JingMatrix of the LSPosed project, and the Xposed API. Video playback uses AndroidX Media3 (Apache 2.0).