Use Your Android Phone As a CCTV Security Camera
https://youtu.be/Fj72QC5AX2w
https://www.cnet.com/how-to/for-a-free-security-camera-look-no-further-than-your-old-phone/
https://www.howtogeek.com/405400/how-to-turn-an-old-android-phone-into-a-security-camera/
https://youtu.be/Z6CH2CLEsTs
https://play.google.com/store/apps/details?id=com.ivuu&hl=en_US
https://play.google.com/store/apps/details?id=com.warden.cam&hl=en_US