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  2. Time-based one-time password - Wikipedia

    History. Through the collaboration of several OATH members, a TOTP draft was developed in order to create an industry-backed standard. It complements the event-based one-time standard HOTP, and it offers end user organizations and enterprises more choice in selecting technologies that best fit their application requirements and security guidelines.

  3. Batak architecture - Wikipedia

    Batak architecture refers to the related architectural traditions and designs of the various Batak peoples of North Sumatra, Indonesia.There are six groups of Batak who speak separate but related languages: the Angkola, the Mandailing to the south, the Toba, to the north the Pakpak/Dairi, the Simalungun, and the Karo.

  4. Long-range acoustic device - Wikipedia

    A long-range acoustic device (LRAD) is an acoustic hailing device (AHD), sound cannon and sonic weapon developed by Genasys.It has been used as a method of crowd control, which has caused permanent hearing damage, having an extremely high decibel capacity (up to 160 dB measured at one meter from the device).

  5. Ely, Cambridgeshire - Wikipedia,_Cambridgeshire

    Cherry Hill is the site of Ely Castle which is of Norman construction and is a United Kingdom scheduled monument. Of similar construction to Cambridge Castle, the 250-foot (76 m) diameter, 40 feet (12 m) high citadel-type motte and bailey is thought to be a royal defence built by William the Conqueror following submission of the Isle from rebels such as the Earl Morcar and the folk-hero ...