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  2. Radar beacon - Wikipedia

    en.wikipedia.org/wiki/Radar_beacon

    Radar beacon. Racon signal as seen on a radar screen. This beacon receives using sidelobe suppression and transmits the letter "Q" in Morse code near Boston Harbor (Nahant) 17 January 1985. Radar beacon (short: racon) is – according to article 1.103 of the International Telecommunication Union's (ITU) ITU Radio Regulations (RR) [1 ...

  3. Permissive action link - Wikipedia

    en.wikipedia.org/wiki/Permissive_Action_Link

    A permissive action link (PAL) is an access control security device for nuclear weapons. Its purpose is to prevent unauthorized arming or detonation of a nuclear weapon. [1] The United States Department of Defense definition is:

  4. Stingray phone tracker - Wikipedia

    en.wikipedia.org/wiki/Stingray_phone_tracker

    When operating in active mode, the Stingray device mimics a wireless carrier cell tower in order to force all nearby mobile phones and other cellular data devices to connect to it. The StingRay is an IMSI-catcher with both passive (digital analyzer) and active (cell-site simulator) capabilities.

  5. Heliograph - Wikipedia

    en.wikipedia.org/wiki/Heliograph

    A heliograph (from Ancient Greek ἥλιος (hḗlios) 'sun', and γράφειν (gráphein) 'to write') is a solar telegraph system that signals by flashes of sunlight (generally using Morse code) reflected by a mirror.

  6. CLLI code - Wikipedia

    en.wikipedia.org/wiki/CLLI_code

    CLLI codes are associated with Vertical and Horizontal coordinates (frequently abbreviated to "V and H coordinates"), which were developed by AT&T researcher Jay K. Donald to provide a relatively simple method of calculating distance between two network locations.

  7. Magnetic ink character recognition - Wikipedia

    en.wikipedia.org/wiki/Magnetic_ink_character...

    Magnetic ink character recognition code, known in short as MICR code, is a character recognition technology used mainly by the banking industry to streamline the processing and clearance of cheques and other documents.

  8. Stingray use in United States law enforcement - Wikipedia

    en.wikipedia.org/wiki/Stingray_use_in_United...

    Stingray devices have been used in a variety of criminal investigations, from murder and kidnapping to misdemeanor theft. The way law enforcement use stingrays has been criticized by a number of civil liberties groups, who have filed lawsuits against current practices.

  9. Medical device company to pay $42 million to resolve US lead ...

    www.aol.com/news/medical-device-company-pay-42...

    A medical device company has agreed to pay $42 million and plead guilty to resolve U.S. charges that it concealed a malfunction in its lead-testing devices that resulted in thousands of...

  10. Machine Identification Code - Wikipedia

    en.wikipedia.org/wiki/Machine_Identification_Code

    A Machine Identification Code (MIC), also known as printer steganography, yellow dots, tracking dots or secret dots, is a digital watermark which certain color laser printers and copiers leave on every printed page

  11. Type Allocation Code - Wikipedia

    en.wikipedia.org/wiki/Type_Allocation_Code

    The Type Allocation Code (TAC) is the initial eight-digit portion of the 15-digit IMEI and 16-digit IMEISV codes used to uniquely identify wireless devices. The Type Allocation Code identifies a particular model (and often revision) of wireless telephone for use on a GSM, UMTS, LTE, 5G NR, iDEN, Iridium or other IMEI-employing wireless network.