This mod adds an item to your inventory called tracer while wearing it a quest called tracker is active and lets you place a tracker on any char that returns 1 to isactor check.

you can keep track of up to 5 actors just sneak up behind and activate like you do to pickpoket them and choose place tracker from the menu. If a char you are tracking goes outside the map where you cant remove thier tracker you can use the reset tracker menu to reset it.

Uses a quest named tracker to keep track of up to 5 xmarkers that are constantly moved to the actor you selected by using place tracker this occurs while the tracer is equiped.

The technical way it works is this

the quest script has 5 ref variables when you place a tracker it stores the ref id of the actor in the first empty ref it then activates the stage of the quest that activates the xmarker that is the objective.

The tracer when equiped will keep moving the active quest objectives (the xmarkers) to the ref id they are assigned to.

when unequiped the script simply turns of showing the quest and its objectives till you equip it again.

If more ref variables and xmarkers were added it could track up to how ever many one took the time to add and set up as part of the quest within the limits of the number of quest stages you can have keeping in mind it takes one stage for placing the marker and one for removing it in other words 2 stages per tracker.