PRISM-OCEAN isn't science - it's a science-based technology. For example, incandescent light was a science for 80 years, before Edison adapted it into a viable technology for the first commercially successful light bulb. The Lithium-Ion battery was a scientific discovery for 30 years before Musk adapted it into a viable technology for the first commercially successful electric car.
Personality researchers developed the Big Five as the first model of human personality that is broadly recognized within the scientific community. As an initial and still ongoing program of research, it is a rigorous approach to creating knowledge, but not to using that knowledge. It's science - not technology.
McCrae & Costa developed the Big Five into an applied technology as the NEO-PI. It is a professional instrument available to those with advanced training. The application is general, with undetermined use. The orientation is very much for the professional's ends, rather than the individual's. It's on the border between science and technology.
Industrial-Organizational psychologists adapted the Big Five into an applied, commercially viable technology: employee assessment. (And also adapted older assessments to accommodate discoveries from the Big Five.) These are proprietary, commercial applications based on the Big Five - whether acknowledged or not. These are usually for initial employee selection, or ongoing employee development. Either way, the purpose and use of this Big Five technology is almost exclusively for the benefit of organizations. Any benefits to the employee are incidental.
Marketers have adapted the Big Five for online consumer segmentation and marketing. Rarely acknowledged, as online surveillance and influence are essentially secret. We know about it chiefly because of Cambridge Analytica, IBM Watson, and various patent filings by technology companies. The purpose and use of this Big Five technology is almost exclusively for the benefit of marketers. Any benefits to the consumer are incidental.
Thus, we are not aware of the Big Five being used as an applied, practical technology for the benefit of individuals.
PRISM-OCEAN is the Big Five adapted into a technology designed primarily for the benefit of individuals. It's the first such technology, as far as we know.