Spontaneously generated, random wrinkles of coatings on microscale particles have been found to be analogous to fingerprints — unique patterns with a wavy topography that can serve as unclonable tags ...

The coat of the traditional tabby, or ‘bullseye’ or "swirled," is the most typical fur pattern of house cats. It features wide, rounded spots on the sides and a clear ‘M’ on the forehead. Swirls are ...