Using the Metastasis Switch, a TARDIS Scanner can also be set to serve as a Time Scanner. This will allow it to view the possible future or past of current time zone. Unfortunately when configured as a Time Scanner the system will occasionally pick up completely unrelated data from any point in space and time. It is for this reason that the Time Scanner isn't considered very reliable. The Signal can also be fed into the Trans-Temporal Projector. The poor resolution of the Time Scanner feature prevents detailed observations and the range is limited to a day or two.