SatNav

A SatNav was a navigational device, used in 21st century. (TV: Spyfall)

	Drivers

The Sixth Doctor claimed to have as acute a sense of directional hearing as a bat with a SatNav. (AUDIO: Absolute Power)

In 2020, south-east of Little Earlham, a SatNav in an MI6 car was taken into control by Kasaavin. It killed its driver with a laser blast and tried to kill the Thirteenth Doctor, Yasmin Khan, Ryan Sinclair and Graham O'Brien. (TV: Spyfall)

Time Lord technology such as the Doctor's TARDIS also had navigational technology referred to as a temporal SatNav. In 1958, the Tenth Doctor told Lord Azlok that while the TARDIS had a few trillion light-years "on the clock", the chameleon circuit didn't work, and the temporal SatNav was "always on the blink", it "has got the meanest sound system in the universe". (TV: Dreamland)

Behind the scenes

The script for Dreamland, seen on the BBC Writers Script Gallery, uses the term generically and not as a proper noun for a brand. The script uses the spelling sat-nav, while the BBC iPlayer subtitles spell it as sat nav, without a hyphen.