In embodiments, a method of securing access to a computer memory and other computer resources includes authoring a 3D projection of data by a registering user customizing elements in the 3D projection, resulting in a registered 3D projection. The method further includes presenting to a requesting user a representation of the elements of the 3D projection in a randomized fashion. The method additionally includes receiving, from the requesting user, manipulations of the presented elements of the 3D projection toward undoing or solving the randomization. The method includes determining whether the manipulated elements of the 3D projection match the customized elements of the registered 3D projection. Then, the method includes granting, to the registered user, access to the computer memory if the manipulated elements of the 3D projection match the customized elements of the registered 3D projection. The granting may be based on the determination of whether the manipulated elements of the 3D projection match the customized elements of the registered 3D projection in the positive.