I could accept identifying with a passport, since the costs alone means it would not be supported in most cases, but only if it was associate with a strict requ

I could accept identifying with a passport, since the costs alone means it would not be supported in most cases, but only if it was associate with a strict requirement that the passport number or any other number/qr/barcode was hidden, and if it was illegal to save copies of even the image of the passport with the numbers hidden.