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Key finder
Key Finders, also known as Keyfinders or Key Locators or Electronic Finders, are small electronic devices used to recover misplaced or lost key sets. Their goal is to reduce the time it takes to locate keys or other personal items, while remaining unobtrusive. Some key finders beep on-demand. ==First Generation Key Finders==
The first generation key finders were sound based, they listened for a clap or a whistle (or a sequence of same) then beeped to the user to find them. Determining what was a clap or a whistle proved difficult, resulting in poor performance and false alarms. As a result of this low quality and reliability, these early key finders were soon discarded and were unpopular for serious needs.
File:Keyfinder001.jpg| whistle keyfinder File:Keyfinder-inside.jpg| inside a 1st. Generation keyfinder
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Key finder」の詳細全文を読む
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