> I guess the hash still points at the phone number behind the scenes though? AFAIK, from the article, yes. But, you can create/delete that hash->phone mapping

> I guess the hash still points at the phone number behind the scenes though? AFAIK, from the article, yes. But, you can create/delete that hash->phone mapping at will. Hence the recommendation to just create when required, or frequently change them if you're concerned. Or, use the QR code/link generation too. Those work the same way.