SPI Cinemas, headquartered in Chennai, has come up with a plan to offer the movie goers with free napkins on the account of them giving missed call to a prescribed number, say reports. The napkin vending machines are set up in the toilet at Sathyam theatre in Royapettah and the phone number is mentioned beside the machines. Woman can give a missed call to the number to get the free napkins from the automatic vending machines. The multiplex company has also reportedly planned to expand this plan to all of its cinema halls.