Possession

Possession is a form of shared usage of the body in which the previous controller passes control of the body to another member, but remains connected to the body’s senses. Often used by the tulpamancy community to refer to the sharing of the body between a tulpa’s host and the tulpa without disconnection from the physical senses on the host’s part. Possession can cover one or more body parts or the whole body, the latter of which is sometimes called full-body possession. Although similar but not to be confused with the likes of demonic possession, the experience of possession is relatively harmless.
The defining characteristics that differentiate Possession from Switching is the connection of the individual being possessed to the senses still remaining. While switching, connection to the senses would be lost.