Final answer:
Examples of technical steganography include microdots and invisible inks, as they both hide information within other media. Microdots are tiny images that can carry detailed information invisibly, and invisible inks require specific conditions to reveal hidden messages. Special characters are not typically considered technical steganography.
Step-by-step explanation:
The question asks for examples of technical steganography, which is a method used in information security to hide messages or information within other non-secret text or data. The examples provided: special characters, microdots, and invisible inks, can all be considered forms of steganography.
- Microdots are tiny, almost invisible dots that contain images of documents. They are an example of technical steganography because they can be hidden in plain sight and require a microscope to be read.
- Invisible inks are substances used for writing, which are invisible either on application or soon thereafter, and can be made visible by some means. Though it might seem like a product from a spy novel, invisible inks are a practical form of technical steganography.
Special characters don't typically fall into technical steganography, as they're not used to hide information within other media in a way that is intended to be unnoticeable.