A method and/or apparatus controls access to a digital resource. An image of a plurality of images is allowed to be selected, each of the images including one or more base lines, each of the base lines having a) non-linear sections, b) sections extending in multiple directions, or c) both non-linear sections and sections extending in multiple directions. Locations are determined where an alignment line intersects the one or more base lines in the selected image. Access to the digital resource is permitted if the locations are determined to be predetermined locations in the image associated with the digital resource prior to the determining.