An ID card is a small, official document that identifies a person. It typically includes the individual's name, photograph, date of birth, and a unique identification number. ID cards are commonly issued by government agencies, schools, or employers to verify a person's identity and can be used for various purposes, such as accessing services or entering secure areas. These cards come in different forms, such as driver's licenses, student IDs, and employee badges. They are essential for activities like traveling, voting, or proving age. ID cards help ensure security and facilitate the identification process in many situations.