Erica Campbell writes to tell us IsraCast is reporting that E-lock has developed a new kind of lock technology designed to open a door based on a "knock code." From the article: "This innovation is based on patented technology which uses a series of quick knocking sounds. The discrete mechanical knocks open the lock and are produced by a small device that can be carried by any authorized person. The device which opens the lock needs to touch the door (which can be made out of any material such as metal, wood, plastic or glass) to cause the lock mechanism to open. Since there is no keyhole or contact point on the door, this unique mechanism offers a significantly higher level of security then existing technology."
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