Identification; an ID used to identify a person, account, or object. A widely used loanword in IT and everyday contexts.
ログインにはIDとパスワードが必要です。
You need an ID and a password to log in.
その写真で本人のIDを確認できた。
We were able to confirm the person's identity from that photo.
新しいIDを発行してください。
Please issue a new ID.