Instant photo sticker machines such as the "print club" booths seen in video game arcades, supermarkets and train stations a few years back are again the rage, prompting postal authorities to ponder the potential profits of allowing such photos as personalized stamps.
Photo sticker machines first took off in 1996 with high school girls and other young women taking photographs of themselves and swapping the photos -- the size of a business card -- with friends.
There were 50,000 machines set up in video game centers, shopping centers and photo shops at the height of the boom in 1997.