Inter-Spectral Vision was an item which was acquired and utilised by a Dalek as it fought to escape the Vault, enabling it to detect cloaked human security officers and mines. (NOTVALID: The Last Dalek)
Behind the scenes Edit
In the original episode, however, the Vault's security personnel were not shown to use cloaking technology. As such, no mention was made of the Dalek's enhanced vision.