I’ve never QR coded! DON’T take your phone with you when you go shopping. Tell them you don’t have a phone. No, you also don’t have a landline phone. No, you don’t have a relatives phone number – or better still, tell them the last one died after the vax! No, you don’t have any friends at all so you can’t even give them their numbers!!! Buy a small radio. Take that with you. Show them it and ask if that will suffice? That’s is, after all, the way you keep in contact with people in your area cos you have no need or want the expense of a phone of any description!