New "emerging" information technology or I.T. concept

  In roughly 300 words, you will explain a new, "emerging" information technology or I.T. concept, describe how it benefits individuals or society writ large, and describe its actual and/or possible harms. In short: 1. What is it? 2. How is it good? What good comes from the use of this technology? 3. How is it bad? What harm comes from the use of this technology?