  The physics beyond the Standard Model with parameters of the compressed
spectrum is well motivated both in a theory side and with phenomenological
reasons, especially related to dark matter phenomenology. In this letter, we
propose a method to tag soft final state particles from a decaying process of a
new particle in this parameter space. By taking a supersymmetric gluino search
as an example, we demonstrate how the Large Hadron Collider experimental
collaborations can improve a sensitivity in these non-trivial search regions.
