This is mentioned in slide 51 (with picture of said device in all its lurid pinkness): https://docs.google.com/presentation/d/13p6O0C3aY-LSeqGAjfEge2XQT6ArfYnJ

This is mentioned in slide 51 (with picture of said device in all its lurid pinkness): https://docs.google.com/presentation/d/13p6O0C3aY-LSeqGAjfEge2XQT6ArfYnJyvu_fhAZlJI/edit#slide=id.gb78815f63_0_74 https://docs.google.com/presentation/d/13p6O0C3aY-LSeqGAjfEg...