Users of this technique state that they are able to from within specific points in the shadow, allowing this technique to be used as a costly way to spy upon others. As a result of prolonged training and experimentation with this technique it has become known that while the user's chakra signature is greatly suppressed while traveling in the shadows, it isn't masked completely. It is because of this that users are able to sneak by sensors who aren't specifically skilled in noticing reduced chakra signatures. Furthermore, this skill can be used to break the lock of sensors who are honing in on a user's location.