Vibration
From Tardis Wiki, the free Doctor Who reference
Spiders gravitated to their food through vibration. (TV: Arachnids in the UK [+]Loading...["Arachnids in the UK (TV story)"])
The Daleks that lived in the Dalek City tracked vibrations as a means of monitoring movement in their city. (TV: The Daleks [+]Loading...["The Daleks (TV story)"]; AUDIO: Return to Skaro [+]Loading...["Return to Skaro (audio story)"])
The space-time locator could be damaged by excessive vibration. (PROSE: Peril in Mechanistria [+]Loading...["Peril in Mechanistria (short story)"])