Ban Khor Sign Language is a village sign language used by at least 400 people of a rice-farming community in the village of Ban Khor in a remote area of Isan. Known locally as pasa kidd, it developed in the 1930s due to a high number of deaf people. Estimated number of users in 2009 was 16 deaf and approximately 400 hearing out of 2741 villagers. It is a language isolate, independent of the other sign languages of Thailand such as Old Bangkok Sign Language and the national Thai Sign Language.