Pixelation density increment for embedding information

A system, comprising:

• one or more processing devices;
• and
• one or more non-transitory machine-readable storage devices storing instructions that are executable by the one or more processing devices to cause performance of operations comprising:
• accessing data representing items of an identifying information about an individual;
• assigning an item of the identifying information to an array of pixels that correspond to a section of an identification document, each pixel in the array of pixels having a corresponding optical density that represents a measure of relative brightness of the pixel;
• determining an encoding of the item based on a line pattern that includes a plurality of distinct line segments and the corresponding optical density of each pixel in the array of pixels;
• encoding the item of the identifying information at the section of the identification document by adjusting a respective optical density of each pixel in the array of pixels to apply the line pattern to the identification document;
• and
• based on the encoding, generating an identification document that i) includes the identifying information printed on the identification document and ii) encodes the item at the section using the plurality of distinct line segments of the line pattern.

One or more non-transitory machine-readable storage devices storing instructions that are executable by one or more processing devices to cause performance of operations comprising:

• accessing data representing items of an identifying information about an individual;
• assigning an item of the identifying information to an array of pixels that correspond to a section of an identification document, each pixel in the array of pixels having a corresponding optical density that represents a measure of relative brightness of the pixel;
• determining an encoding of the item based on a line pattern that includes a plurality of distinct line segments and the corresponding optical density of each pixel in the array of pixels;
• encoding the item of the identifying information at the section of the identification document by adjusting a respective optical density of each pixel in the array of pixels to apply the line pattern to the identification document;
• and
• based on the encoding, generating an identification document that i) includes the identifying information printed on the identification document and ii) encodes the item at the section using the plurality of distinct line segments of the line pattern.