Im attempting to create a QR scanner with my iPhone app to open a door lock using an Arduino Uno. I am not sure how to connect the Arduino to the app on my phone. I saw a video online that did exactly what I wanted but with an Android and I was wondering if that was any way to do the same thing using iPhones. The link to the video I watched is here: App Inventor 2 + Arduino tutorial - simple QR code door lock - YouTube
Thanks in advance.
P.S. I am very new to Arduino and have only done a few personal projects for fun.