Related Clues:

• Foreign-travel necessity
• It's clipped on to show who you are
• Charge option
• Stamp collector?
• Discover competition
• Credit card offerer
• Type of endorsement
• Item on a chain, maybe
• It may be scrutinized on a carousel
• Shopper's card, often
• International terminal document
• American Express alternative
• It may be checked at a checkpoint
• Patient's wristwear
• Suitcase attachment, for short