1. A method comprising: displaying a set of characters; obtaining an image comprising handwritten text of a user, wherein the handwritten text corresponds to the set of characters; determining a coordinate of a first shape within the image by sweeping the image with the first shape, wherein the first shape corresponds to a first parameter; segmenting the image into a segmented character based at least on the coordinate of the first shape; determining a character segmentation accuracy of the first parameter by comparing the segmented character with the set of characters; and storing, based on the character segmentation accuracy of the first parameter, an association between the user and the first parameter.