(at around 26 mins) When Tun and Jane examine ghost photos affixed to a wall, there is a enlarged photo of a ghost standing near bookshelves with tables in the foreground. This is a screenshot from the Williard Library "ghostcam". The Willard Library is located in Evansville, Indiana USA and in recent years, has become very popular for its website where visitors can view the webcam surveillance 24 hours a day for paranormal activity.
Has been remade three times. Sivi (2007) is the Indian remake, Shutter (2008) is the American remake, and Click (2010) is the Hindi remake.
The phenomenon of capturing ghosts or evidence of the supernatural in photos is known as spirit photography. This phenomena dates back as early as the 19th century.
The film was the biggest box-office hit in Thailand in 2004, and was also a hit in Singapore, Malaysia, the Philippines and Brazil.
The stunt double for Natri got hurt while filming the hit and run sequence.