The Telchak Device is technology left by the Ancients and is named after the Goa'uld Telchak who used its design to create the first sarcophagus. The technology worked as a healing device for the Ancients, but it proved dangerous to humans if they were exposed to it for too long a time at too close a distance. If a human were exposed to the powers of the device after death, the energy absorbed by the dead tissue reanimated it — creating a zombie. Anubis used similar technology to animate his Kull Warriors.