Dalek holding cell

A Dalek holding cell was a form of holding cell used by the Daleks.

Locations which contained holding cells or technology similar in appearance included the Dalek City on Skaro and the Crucible. (DW: The Daleks, DW: Journey's End)

The holding cell appeared to be nothing more than a spotlight in the ceiling. When impacted, the blue energy of the cell was visible. There was some discrepancy in how the holding cell appeared when activated: sometimes, only the light in the ceiling was seen until the cell was impacted and the energy was visible, but on at least one occasion, the forcefield visibly descended when the cell was activated. It is possible that the cell was being impacted as it was descending. (DW: Journey's End)

Trivia
The Holding Cell looks similar to the Ray Shields in Star Wars Episode III.