S: (n) badge (an emblem (a small piece of plastic or cloth or metal) that signifies your status (rank or membership or affiliation etc.)) "they checked everyone's badge before letting them in"
S: (n) merit badge (a badge award to Boy Scouts in recognition of special projects)
S: (n) button (a round flat badge displaying information and suitable for pinning onto a garment) "they passed out campaign buttons for their candidate"
S: (n) stripe (a piece of braid, usually on the sleeve, indicating military rank or length of service)
S: (n) positive identification (evidence proving that you are who you say you are; evidence establishing that you are among the group of people already known to the system; recognition by the system leads to acceptance) "a system for positive identification can prevent the use of a single identity by several people"
S: (n) key (a generic term for any device whose possession entitles the holder to a means of access) "a safe-deposit box usually requires two keys to open it"
S: (n) number (a numeral or string of numerals that is used for identification and may be attached to accounts, memberships, etc.) "she refused to give them her Social Security number"
S: (n) card, identity card (a card certifying the identity of the bearer) "he had to show his card to get in"
S: (n) green card (a card that identifies the bearer as an alien with permanent resident status in the United States) "he was surprised to discover that green cards are no longer green"
S: (n) ID, I.D. (a card or badge used to identify the bearer) "you had to show your ID in order to get in"
S: (n) credit card, charge card, charge plate, plastic (a card (usually plastic) that assures a seller that the person using it has a satisfactory credit rating and that the issuer will see to it that the seller receives payment for the merchandise delivered) "do you take plastic?"
S: (n) debit card (a card (usually plastic) that enables the holder to withdraw money or to have the cost of purchases charged directly to the holder's bank account)
S: (n) smart card (a plastic card containing a microprocessor that enables the holder to perform operations requiring data that is stored in the microprocessor; typically used to perform financial transactions)
S: (n) id ((psychoanalysis) primitive instincts and energies underlying all psychic activity)
S: (n) instinct, inherent aptitude (inborn pattern of behavior often responsive to specific stimuli) "the spawning instinct in salmon"; "altruistic instincts in social animals"