The primary object of an efficient police is the prevention of crime: the next that of detection and punishment of offenders if crime is committed. To these ends all the efforts of police must be directed. The protection of life and property, the preservation of public tranquillity, and the absence of crime, will alone prove whether those efforts have been successful and whether the objects for which the police were appointed have been attained.

Sami risked detection.

Sami took extreme calculated steps to avoid detection.

Early detection is the key.

The critical control points for cranberry sauce include the washing area where berries are first received, filtration and metal detection points where any foreign materials are removed, a heat treatment pasteurization area, and acidity checks, among others.

You have brought detection as near an exact science as it ever will be brought in this world.

It can be hard to set your exact location in a ridesharing app in Hong Kong because all the tall buildings disrupt your phone's GPS detection.

In March 1999, Marcy and Butler announced the detection of the first true other "solar system" in which they found evidence of 3 planets orbiting a single star. The star is called Upsilon Andromedae.

She had escaped detection somehow.

Sami wanted to avoid detection.