How to use phone as Webcam

In this step-by-step tutorial, you will learn how to use your iPhone or Android phone as a webcam for your Windows, Mac, or Linux PC or laptop. For this to work, you need to install an application on your PC and mobile device.
The app we will use is called the Iriun app.
The application we are going to use allows you to use your phone's camera as a wireless webcam in your PC or Mac.
This app is available on windows, Linux, mac, android and iPhone.
You can install the iriun app on your PC from www.iriun.com and on your mobile device via the App Store or the PlayStore by searching for Iriun.

Installation on Ubuntu
The app is available as a .deb package on Ubuntu Linux and works on ubuntu 18.04 and later.
The iriun app can be installed with the following steps.
Download the .deb package from the website at www.iriun.com.
After a successful download, open your terminal using Ctrl Alt T or form the applications menu.
Type in the following command:
sudo dpkg -i /path/to/deb/file
Replace the section after -i with the location path where your downloaded deb package was downloaded to. For example:
sudo dpkg -i /home/irene/Downloads/Programs/iriunwebcam.deb
press enter on your keyboard for installation to begin.
Afterwards, type in this command in your terminal.
sudo apt-get install -f
Why use sudo apt-get install -f after sudo dpkg -i /path/to/deb/file?
From man apt-get
-f, --fix-broken
Fix; attempt to correct a system with broken dependencies in place.
The reason for running this second command is because when dpkg installs a package and the package dependency is not satisfied, it leaves the package in an "unconfigured" state and that package is considered broken.
The sudo apt-get install -f command tries to fix this broken package by installing the missing dependency.

The following window will appear. Press Tab to select Yes and hit enter on your keyboard.

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