Anatomical Drawings of Staircase Spaces A Book by Tomoyuki Tanaka ShibuyaDetailPlatformsSpiralDescent+3 More Back to the Drawing BoardSection-perspective drawingKengo Kuma's sketches architecturedrawingtransportationart
Picking locks with audio technology An Article cacm.acm.org The series of audible, metallic clicks made as a key penetrates a lock can now be deciphered by signal processing software to reveal the precise shape of the sequence of ridges on the key's shaft. Knowing this, a working copy of it can then be 3D printed. A Burglar's Guide to the City crimesecuritysound