Which term describes the use of physical or chemical methods, such as invisible ink or microdots, to hide the existence of a message?

• A. Invisible Ink
• B. Technical Steganography
• C. Microdots
• D. Computer-Based Methods

Answer: (B)

Steganography is about hiding the existence of a message rather than its contents. When the concealment uses physical or chemical means—like invisible ink that stays hidden unless revealed, or microdots that encode data in tiny marks—you’re applying a form of steganography that works in the physical world. Technical Steganography specifically captures this use of tangible methods to embed hidden information. Invisible ink and microdots are concrete examples of those methods, not the overall category. Computer-based methods describe hiding information in digital data, which isn’t the scenario here. So Technical Steganography is the best fit for this description.