US Patent 12118138 Vergence authentication

A system and method for authentication. In some embodiments, the method includes displaying a plurality of objects to a user's left eye and to the user's right eye, and monitoring the user's eye positions while the user looks at a subset of the displayed objects, one at a time. The method may further include comparing an angular offset for an object of the plurality of objects to a vergence measured for the user's eyes while the user looks at the object.