Which of the following is NOT a component of a bar code system?

The identification of a digital marketing strategy as not being a component of a bar code system is correct because a bar code system fundamentally consists of the elements directly related to the creation, reading, and processing of bar codes.

A bar code system typically includes:

• A bar code printer, which generates the bar codes that encode data in a visual format.
• Labels, which are the physical medium that contains the bar codes, allowing for their attachment to products for identification.
• A communication link between the reader and application, which is essential for transmitting the scanned data to an information management system for processing.

In contrast, a digital marketing strategy revolves around promoting products or services through various online platforms and channels and does not relate to the technical aspects of bar code processes.