What is "backtracing"

Usage examples of "backtracing".

Starting with these time-and-place fixes, he'd concentrate with all the intensity of a Vingean focus trance, backtracing the plaid Collins-dittos, eager to see what tricks they used to cover their trail, pouncing on any slipup.

It took days or weeks to set up the missile carefully enough to obscure its emplacement from backtracing .

That it is some unknown curiosity picked up perhaps at the port mart with no backtracing for its origin?

A local PD might not have sophisticated detection or backtracing gear, but all they need to do is plant false information to try to ferret out a snooper.