Kiosk with a Memory

Evan Schuman writes about a new DVD kiosk that has a memory for consumers and can offer them rewards based on multiple interactions. Its the same idea that has been suggested for retail loyalty programs, but is rarely well implemented. The kiosk uses your e-mail address instead of a loyalty card for identification. It may suffer from the reluctance of the consumer to offer up their e-mail addresses without obvious assurance that it won't be misused.