> maybe it is trivial to distinguish prints made on a surface from those in the structure of the surface I believe it is. Fingerprints left on a surface are ma

> maybe it is trivial to distinguish prints made on a surface from those in the structure of the surface I believe it is. Fingerprints left on a surface are made with oils from the skin and are "lifted" off by applying a substance that sticks to it and literally lifting the print off the surface.