In a futuristic video produced by American Express Co., an executive schedules and pays for his trip with a smart card, then submits his expenses for reimbursement with the click of a mouse.

Some of these functions are already available through tests American Express and other companies have begun; some are taking shape in laboratories and technologists' imaginations. But corporate card issuers agree the vision will inevitably come true as companies move to the higher level of technology.

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