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- Cardkey abstract "Cardkey is the name of the company that started an industry and were based in Chatsworth, California. They were the first company to develop and widely distribute \"Electronic Access Control Systems\". Once a division of Greer Hydraulics, Inc., in January 1999 they were bought out by Johnson Controls, a company whose founder invented the electric room thermostat in the late 1800s. In the UK they had offices in Manchester and Reading and sold their systems to companies such as British Telecom, Shell and BP. The main facility for Cardkey was located on Nordhoff and Mason in Chatsworth with an additional location on Cozycroft in Chatsworth which housed Customer Engineering and a singular Engineering project (PASS system)in approximately 1978.The company's original readers used cards which were made from barium ferrite and worked by magnetically attracting and repelling locking/unlocking cores within the reader module mechanism. These cards were primarily used by fraternal organizations and clubs, such as BPOE (Elks) and others.From there they were the first to develop Wiegand cards and readers which were again magnetically based but were more reliable and did not require calibration as used in the barium ferrite readers. These cards and readers were highly programmable, and used in applications ranging from ADT (American District Telegraph) to government installations worldwide.".
- Cardkey wikiPageID "8666284".
- Cardkey wikiPageLength "1586".
- Cardkey wikiPageOutDegree "9".
- Cardkey wikiPageRevisionID "604593943".
- Cardkey wikiPageWikiLink Access_control.
- Cardkey wikiPageWikiLink Barium_ferrite.
- Cardkey wikiPageWikiLink Card_reader.
- Cardkey wikiPageWikiLink Category:Access_control.
- Cardkey wikiPageWikiLink Category:Security_companies.
- Cardkey wikiPageWikiLink Greer_Hydraulics.
- Cardkey wikiPageWikiLink Johnson_Controls.
- Cardkey wikiPageWikiLink Keycard_lock.
- Cardkey wikiPageWikiLink Wiegand_interface.
- Cardkey wikiPageUsesTemplate Template:Unreferenced.
- Cardkey subject Category:Access_control.
- Cardkey subject Category:Security_companies.
- Cardkey hypernym Company.
- Cardkey type Company.
- Cardkey type Company.
- Cardkey comment "Cardkey is the name of the company that started an industry and were based in Chatsworth, California. They were the first company to develop and widely distribute \"Electronic Access Control Systems\". Once a division of Greer Hydraulics, Inc., in January 1999 they were bought out by Johnson Controls, a company whose founder invented the electric room thermostat in the late 1800s.".
- Cardkey label "Cardkey".
- Cardkey sameAs Q5038753.
- Cardkey sameAs m.027d6w6.
- Cardkey sameAs Q5038753.
- Cardkey wasDerivedFrom Cardkey?oldid=604593943.
- Cardkey isPrimaryTopicOf Cardkey.