ALEXANDRIA, Va., July 30 -- United States Patent no. 12,373,539, issued on July 29, was assigned to Adeia Guides Inc. (San Jose, Calif.).

"Systems and methods for using occluded 3D objects for mixed reality CAPTCHA" was invented by Dhananjay Lal (Englewood, Colo.) and Serhad Doken (Bryn Mawr, Pa.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Systems and methods for generating a CAPTCHA challenge in a virtual environment are disclosed. The methods display a spatially anchored virtual 3D object in a virtual environment where certain features of the 3D object are hidden or occluded. The methods provide general, specific, or no instructions to a user for manipulating the displayed 3D virtual object. Upon determ...