Me, showing it: “I think this likely has the prescription saved on it [and so I will likely not need an exam].” Staff: Would you mind if I scrolled your phone? I need to find the most recent one. Me: Of course. Staff: Wow you *have* been here before.
For Compliance-y reasons my glasses chain of choice in Japan won’t save a prescription but they will save the warrantee information to a customer’s account, which just happens to include a prescription. But customer has to *show* it to avoid Compliance concerns.
