If you have an extra laptop lock lying around, a few modifications can transform it into a perfect secondary bike lock.

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[img]http://da.feedsportal.com/r/165663860141/u/49/f/647165/c/34977/s/2bcb4ae3/a2.img[/img][img]http://pi.feedsportal.com/r/165663860141/u/49/f/647165/c/34977/s/2bcb4ae3/a2t.img[/img][img]http://feeds.feedburner.com/~r/lifehacker/full/~4/ANMAxLGc3iw[/img]

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