<b>Sentinel Lens</b> is a facial recognition surveillance app that uses your Android device's camera to record video in the background (with no live preview) and sends <b>Telegram alerts</b> when unauthorized individuals are detected, based on a configurable <b>blacklist</b> and <b>whitelist</b>. <b>Key Features</b> <b>Background Recording</b> <ul> <li><b>Discreet Capture:</b> Record video silently in the background without any visible camera preview.</li> <li><b>Saved Camera Footage:</b> Automatically store recordings for later review.</li> <li><b>Front or Back Camera:</b> Choose either camera lens for optimal coverage.</li> </ul> <b>Advanced Facial Recognition</b> <ul> <li><b>Facial Recognition Surveillance:</b> Analyze recorded frames to identify known and unknown faces.</li> <li><b>Configurable Watchlist:</b> Maintain custom blacklist and whitelist entries to control alerts.</li> </ul> <b>Real-Time Alerts</b> <ul> <li><b>Telegram Alert Integration:</b> Send instant notifications via Telegram when a watchlist match is detected.</li> </ul>