Liar's dice is a class of dice games for two or more players requiring the ability to deceive and detect an opponent's deception.
Level sensors detect the level of liquids and other fluids and fluidized solids, including slurries, granular materials, and powders that exhibit an upper free surface.
Fracture sonography is the use of medical ultrasound to detect bone fractures.
Proofreading is the reading of a galley proof or an electronic copy of a publication to detect and correct production errors of text or art.
Scintimammography is a type of breast imaging test that is used to detect cancer cells in the breasts of some women who have had abnormal mammograms, or for those who have dense breast tissue, post-operative scar tissue or breast implants.
Sentinel species are organisms, often animals, used to detect risks to humans by providing advance warning of a danger.
Indicator bacteria are types of bacteria used to detect and estimate the level of fecal contamination of water.
Sniffer bees or sniffer wasps are insects in the order Hymenoptera that can be trained to perform a variety of tasks to detect substances such as explosive materials or illegal drugs, as well as some human and plant diseases.
In the broadest definition, a sensor is a device, module, or subsystem whose purpose is to detect events or changes in its environment and send the information to other electronics, frequently a computer processor.
Non-stop decay is a cellular mechanism of mRNA surveillance to detect mRNA molecules lacking a stop codon and prevent these mRNAs from translation.
The Sagittarius Window Eclipsing Extrasolar Planet Search, or SWEEPS, was a 2006 astronomical survey project using the Hubble Space Telescope's Advanced Camera for Surveys - Wide Field Channel to monitor 180,000 stars for seven days to detect extrasolar planets via the transit method.
Spirale is a French government programme to develop an early warning system which will use infrared satellite imagery to detect the flights of ballistic missiles during their boost phase, just after launch.
In signal processing, a matched filter is obtained by correlating a known signal, or template, with an unknown signal to detect the presence of the template in the unknown signal.
An optical beam smoke detector is a device that uses a projected beam of light to detect smoke across large areas, typically as an indicator of fire.