Some cards display a three-dimensional hologram on the card front with a globe pierced by an arrow.
Many cards display a three-dimensional holographic magnetic stripe, which, when tilted, shifts color and appears to move.
A three-digit CID is printed in a separate box to the right of the signature panel on the card back. It ensures the cardholder possesses the card at the time of purchase.
The cardholder may choose to verify the CID during any authorization request for keyed or swiped transactions.
The Discover Acceptance Mark will appear on the front or back of the card.
"DISCOVER" or "DISCOVER NETWORK" appears on a tamper-evident signature panel. Some cards contain an ultraviolet image that repeats the word "DISCOVER" in the signature panel.
"Valid Thru" indicates the last month in which the card is valid.
On embossed cards, a security character appears as a stylized "D." A missing "D" on an embossed card may help you detect a counterfeit or altered Discover card.
On unembossed cards, no stylized "D" will appear.
A business name may be embossed below the cardholder name.
All Discover card numbers start with 6. On embossed cards, the card number should be uniform in size and spacing. On unembossed cards, the card number and expiration date are printed flat on the front.
Under an ultraviolet light, "DISCOVER" or "DISCOVER NETWORK" will appear on the card.
To obtain an authorization or address verification, or to question the validity of a Discover card, call the Discover Global Network Authorization Center at 1-800-347-1111.
Note: All declined authorizations are final
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