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Summary

Description An early kind of burglar alarm - trip stairs. The idea was that when a robber broke in, he would try to sneak quietly up the stairs in the dark, not knowing that on the way up there would be steps close together (like the second and third from the top), causing him to hopefully trip and wake someone up. It apparently worked pretty well.
Date
Source Flickr
Author Lisa from United States of America

Licensing

w:en:Creative Commons
attribution share alike
This file is licensed under the Creative Commons Attribution-Share Alike 2.0 Generic license.
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This image was originally posted to Flickr by LunaMoth116 at https://www.flickr.com/photos/44372118@N05/4513545117. It was reviewed on 19 February 2015 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-sa-2.0.

19 February 2015

Captions

An early kind of burglar alarm - trip stairs. The idea was that the unexpected change in the level of the stairs would foil the would-be robbers by causing them to trip in the darkness and wake someone.

Items portrayed in this file

depicts

3 April 2010

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Date/TimeThumbnailDimensionsUserComment
current00:35, 19 February 2015Thumbnail for version as of 00:35, 19 February 20153,968 × 2,976 (3.48 MB)Ultra7Transferred from Flickr via Flickr2Commons

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