Which technology first allowed film studios to precisely measure viewer engagement with product placements in streaming content?

The film and television industry has long been intertwined with product design and brand promotion strategies. From subtle inclusions to major plot points, how products appear on screen has evolved dramatically over decades. This trivia question explores a pivotal technology that transformed how film studios track and analyze the effectiveness of product placements in their content. Test your knowledge about the intersection of analytics and entertainment!

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Eye-tracking heat maps integrated with streaming platforms
Advanced pixel-recognition software with frame-by-frame analysis
Neural network audience reaction prediction models
Blockchain-based viewer attention verification systems