Multi-dimensional light can offer secure data storage.

"Researchers developed a holographic data storage approach that stores and retrieves information in three dimensions by combining the amplitude, phase, and polarization properties of light. Credit: Xiaodi Tan, Fujian Normal University in China" (ScitechDaily, This Multidimensional Holographic Breakthrough Stores Massive Data Inside Light Itself)

Holograms, or multidimensional light, are tools that can store and transport information. The hologram stores information in multiple layers. And then the image recognition system observes that data. This is one way to secure communication. Secured communication requires multiple variables. The wavelength. Or the colour of the image, the image itself, and sub-images in the image are things that can be used for secure communication. The image can act as the bit. 

We can say that the image of Donald Duck. It can have a value of 0 or goofy. It can have a value of zero. The system can send those images in a series of other images. And. The receiving system picks only images that mean zero or one. 

"The image shows (a) the holographic data storage system schematic diagram, (b) a schematic diagram illustrating the complex plane for double-phase decomposition of complex amplitude and (c) an example of a checkerboard pattern for two phase values m and n. Also shown are (d) an example of the intensity distribution at the image plane and (e) an example of phase distribution at the image plane. In (f), the first (I) and second (II) records are shown, with the readout shown in (g). Credit: Xiaodi Tan, Fujian Normal University in China"(ScitechDaily, This Multidimensional Holographic Breakthrough Stores Massive Data Inside Light Itself)

The system can also use different images as flashes, and then. The system can measure the time the image is visible. The system must see. A certain image. At a certain time, it accepts the bit. The system that tries to break the code must have all information about the key that the system uses to open the messages. 

In this model, the time the image is visible. It is the thing that determines the value of the bit. If the system sees the image in 2 seconds, the value of the image in the computer memory is 1. And if the time is shorter, the value is 0, for example. The image that the system sees can also include a word or letter. And that makes it possible. To create an encryption process that is very flexible and effective. 

https://scitechdaily.com/this-multidimensional-holographic-breakthrough-stores-massive-data-inside-light-itself/