identification; ID; identity document
A general term for any official document that proves one's identity, such as a driver's license, passport, or residence card.
When checking in at the hotel, I was asked to show identification.
身分証明書として運転免許証を使えますか。
Can I use my driver's license as an ID?
Please present your ID at the reception desk.
We check ID at the time of entry.
Please bring your ID to the exam.
You can't enter the building without ID.
身分証明書 refers to the physical document that proves identity, while ID is the more general term for an identifier or identification, often used for digital accounts as well.