ID INFO is a term used to refer to personal information that is used to identify an individual. This includes AGE, SEX, address, and social security number. AGE is typically expressed in three letters, such as DOB for date of birth. SEX is typically expressed in three letters, such as M or F for male or female. Address is typically expressed in four letters, such as STRE for street. Social security number is typically expressed in four letters, such as SSN.