When sourcing interactive floor LEDs, prioritize Load-Bearing Capacity, which should be at least 2,000kg/sqm to withstand heavy foot traffic or vehicles. The Pixel Pitch (typically P2.5 to P6.25) determines visual clarity; smaller pitches are better for close-up viewing. Ensure the display features High-Sensitivity Sensors (optical or pressure-based) for a response time of <30ms. Additionally, the surface must have an Anti-slip, Anti-glare, and Scratch-resistant tempered glass or acrylic mask with an IP65 or higher waterproof rating for durability in public spaces.