Blind spot
A blind spot was a location where a security system or sensor could not detect an intruder.

When William T. Riker participated in a battle simulation at Starfleet Academy, he calculated a sensory blind spot on a Tholian vessel and hid within it. Many years later, in 2365, Lieutenant Commander Data noted this as one of Riker's various battle techniques while preparing for Operation Lovely Angel. ()

The magnetic storm at the magnetic pole of a planet in the Delta Quadrant was called a blind spot by Harry Kim. At this location, the orbital sensor net was unable to detect the . ()

See also 
 Sweet spot

External link 
 
Physics
Maneuvers