Critical Thinking Questions Case 7-1 You recently started working part-time in a retail store, and are learning about the reading devices your store uses. Your store uses a bar code reader to process items during checkout. What type of technology does the bar code reader use?

Laser Beams

Explanation:

  The laser beam is one of the type of technology that helps in amplifying the light by using the laser principle Stimulated emission in the laser. The word "LASER" is stand for the Light amplification by stimulated emission of radiation.  

The laser is one of the device that emitted the coherent light in the form of beam rays that is propagate only in one direction. The following are the laser beam technology are as follows:

Therefore, Laser beam is the correct answer.

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