There was no question? But I'm glad your grandma has a phone. It must feel very good inside to have such privilege in this day and age! It's really not that hard to understand not everyone can use a QR code. ADA laws exist for a reason. I'd totally understand if you're just a 15 year old who's trying to feel superior, but you're being very ignorant to the less fortunate. Everyone would love to be able to experience all there is to life, and to gatekeep it behind a QR code is rather nonsensical.
An internet capable phone in 2023 costs close to no money. Again, if 3rd world countries can maintain an internet presence in the face of global imperialism, grandma can scan the fucking QR code with her dinky $20 android
You fail to see the point, and once again that's okay. When technology outpaces you, you'll come to understand what this conversation means. Take care, and try to make the world a better more accessible place if you have the capacity to do so :).