Design a Navigation App for Visually Impaired Pedestrians

You are tasked with designing a pedestrian navigation app for visually impaired users in urban environments. Research indicates that current navigation apps do not adequately address this group's specific needs, such as detailed audio cues and obstacle detection. You're working with a constraint of using only existing smartphone hardware (e.g., GPS, accelerometer, etc.) and you have one designer available for a two-month sprint. Your task is to choose a prioritized feature set and define success metrics while avoiding solution proposals.

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