Blind beam-out
A blind beam-out was a procedure performed with a transporter.

This method was used when normal means of acquiring a transporter lock on a subject were unsuccessful. A transport cycle was engaged within a designated area without knowing exactly who or what was present. This was usually done in an emergency situation where an immediate evacuation was required.

Seska performed a blind beam-out in 2371 when a subspace vacuole on an asteroid prevented her from getting a transporter lock on an away team composed of Chakotay, B'Elanna Torres, and Harry Kim. While Chakotay and Torres were returned to the , Kim's pattern was pulled into the vacuole. ()
Transporter technology