Quote
June 22 | 9:33
[308 notes]
"
門に鍵を付けたいのだけれど，複数の人がその鍵を開けられるようにしたい。
そんなときは，複数の南京錠をチェーン状に繋げよう。
こうすれば，どれかの錠を外すだけで門を開けることができるようになる。
もし，どれかの鍵を無くしてしまっても，その錠だけを取り替えれば，セキュリティは守られる。合鍵だと，錠とすべての合鍵を取り替えなきゃならない。
"南京錠の鎖 - Radium Software (via vampir) (via yuiseki) (via udonchan) (via gohnoh)
Rebloged from : kwanzeoncalling
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