USB camera & Motion detector (2019+)

You can use different cameras: 1) gadget's camera; 2) USB-camera
USB camera must support UVC standard and gadget must support OTG USB.
The app can save videos on Google Cloude Drive as well as SD card.

After motion or smoke have been detected, the app will send alarm notifications: EMAIL, Call, Telegram.
Alarm videos can be uploaded on Google drive or YouTube directly.
No root-rights are needed.

Telegram messenger support
The app can send messages to another smartphone/computer via the Telegram messenger when the built-in motion/smoke/sound detectors are triggered in the app. Something like SMS.
Through the Telegram at any time  the user can directly access the camera/archive/geolocation of android gadget, as well as video files of Google-drive, DropBox-drive or YouTube-channel which were recorded during the app operation.
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The app allows you to capture and save videos from any USB-camera and from the "native" camera of your gadget simultaneously.

The recording can begin:
1) When you press a special button on the screen (green button)
2) By motion detector
3) By the sound detector (you can just shout out loud and the recording will start)
4) Scheduled

In addition to the SD-card, the app can store the video on Google cloud and on YouTube.
Also, the functionality provides hidden video surveillance, using several cameras:
1) USB camera connected via OTG USB cable
2) Own gadget camera