Dimensional residue
From Jenny Everywhere Wiki
The Drove of the Database-Compiling Dromedaries' scanner was able to pinpoint Pessimist-242's home dimension by analysing dimensional residue he carried. Although they'd never heard of the Cupid Homeworld before, the data they gathered was apparently sufficient for them to use it to travel to the Homeworld, had they possessed means of multiversal travel. (PROSE: Pessimist and the Dromedaries)
