マイナ保険証の利用には「紙の資格情報」が必要?

Original review summary

The review says the paper document, properly called “資格情報のお知らせ,” is not normally needed when using a My Number health insurance card. It may be needed at facilities without the online eligibility system or when the card reader has a system error; a smartphone showing the My Number Portal eligibility screen can also be used instead.[S1]