> But having the barcode is far more convenient, and I’d like to have it without having to keep yet another plastic card I rarely use in my wallet. > So I put

> But having the barcode is far more convenient, and I’d like to have it without having to keep yet another plastic card I rarely use in my wallet. > So I put it on my phone, in my iPhone’s Wallet app Another option would be to literally put the barcode on the phone. Print it on a small piece of paper, about 15mm wide, and tape it to the back of the phone with some transparent tape.