CameraFi is a free USB camera and webcam application published by Vault Micro, Inc. which allows you to record and display video from a USB camera which is connected to your Android device.
We at Runappsforpc have tested and used CameraFi on an Android smartphone and it worked pretty well. At the moment CameraFi is available for Android and iOS devices.
How to download CameraFi for PC and Mac
In order to download and install CameraFi for PC (Windows 7/8/10) or Mac OS X you will have to use an Android emulator such as BlueStacks Player.