From your smartphone or tablet running Android 4.0 or higher, go to Settings, scroll down to Security, and select Unknown sources. Selecting this option will allow you to install apps outside of the Google Play store. Depending on your device, you can also choose to be warned before installing harmful apps. This can be enabled by selecting the Verify apps option in the Security settings.
iOS & Windows
First you’ll need to get an app that reads QR codes. There are tons in the App Store. Some are free and some are paid. you may use Quick Scan App from iTunes or Apple Store. Open Quick Scan and scan the code below. you may also click the button below to be directed to the mobile optimized website.