A scanner is a radio receiver that can automatically tune, or scan, two or more discrete frequencies, stopping when it finds a signal on one of them and then continuing to scan other frequencies when the initial transmission ceases.
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Boston Police Scanner
A full-body scanner is a device that detects objects on a person’s body for security screening purposes, without physically removing clothes or making physical contact. Depending on the specific technology, the operator may see an alternate-wavelength image of the person’s…
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