What do I need to be able to scan my participants' QR codes?

You need to download the Invajo Events app, which is available on the Appstore and Google Play.

You need to download the Invajo Events app, which is available on the Appstore and Google Play. In this you log in with the same email address and password as you do in regular Invajo. You do not need to buy any QR code reader, everything is managed in the app.