Vulcan finger-touching

Vulcan finger-touching was a ritualistic form of affection among Vulcans. The behavior was also occassionally used between a Vulcan and a member of another species, such as between Sarek of Vulcan and Amanda Grayson of Earth. Another example of this was between Spock and a Romulan female commander. Finger-touching was also sometimes involved in sex between Vulcans. Some Vulcan marriages also incorporated finger-touching.