Imprecise echolocation.


Rules Discussion


What couldn't echolocation locate? Can it locate ghosts?

Silver Crusade

I would say no, since there's nothing for the sound to bounce off of.


Also, things that don't move or move very slowly. While the echolocation would 'see' something there, they may not realize that it is actually a creature. So that would probably be some sort of Hide/Perception challenge.


Anything incorporeal, most air, water and fire elementals, some other creatures that have no physical substance for sound to bounce on.


breithauptclan wrote:
Also, things that don't move or move very slowly. While the echolocation would 'see' something there, they may not realize that it is actually a creature. So that would probably be some sort of Hide/Perception challenge.

Echolocation would give a rough outline of what's there. An imprecise sense, by default, automatically brings any creature within range to detected but hidden (i.e., you know the square they occupy). Because it's hidden, it's possible for the creature to Sneak to become undetected. Conversely, the creature with Echolocation can use it to Seek, but this can only bring the target up to Hidden. Note that Hide is unnecessary, as it only gets you to the Hidden condition necessary to Sneak.

Precise Echolocation, of course, defeats almost all attempts to be sneaky by anything with corporeal presence, unless they have some form of cover/concealment that applies (loud noise, solid walls, etc work fine). I can't think of any real way to actively take measures against it that are plausible that aren't outright generating concealment.

Horizon Hunters

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Pathfinder Rulebook Subscriber

You can take special precautions against special senses, explained here, but it requires you know ahead of time that the target has said sense. The feat Foil Senses allows you to always be taking special precautions.


Pathfinder Maps, Pathfinder Accessories, PF Special Edition, Starfinder Adventure Path, Starfinder Maps, Starfinder Roleplaying Game, Starfinder Society Subscriber; Pathfinder Roleplaying Game Superscriber

Cover yourself in 2 meter long foam spikes, ala an anechoic chamber. You'd be completely visible to sight, but close to invisible to echolocation.


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Cordell Kintner wrote:
You can take special precautions against special senses, explained here, but it requires you know ahead of time that the target has said sense. The feat Foil Senses allows you to always be taking special precautions.

There also has to actually be a way to do that. There isn't much you can do about something like lifesense even if you do know it's there, absent there being some very specific spell or the like.

I'd argue sound-absorbing materials don't work against echolocation, much the way light-absorbing materials aren't going to stop me from seeing where you are by the giant black spot.

Horizon Hunters

Pathfinder Rulebook Subscriber

Easy, you can fool Lifesense by not being alive, so just stop your heart for a bit and sneak by.

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