Which architectural retail design innovation was specifically developed to slow customers down and encourage exploration of more merchandise?

The intersection of architecture and retail design has evolved dramatically in recent decades. Modern retail spaces are carefully engineered environments that blend aesthetics, functionality, and psychological triggers to enhance the customer experience. This trivia question explores a significant innovation in architectural retail design that has transformed how consumers interact with physical store environments.

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The Gruen Transfer (forced path redirection)
Vertical Transportation Hubs (escalator/elevator centralization)
Daylight Harvesting Systems (natural light optimization)
Modular Fixture Architecture (plug-and-play display systems)