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A comparison between different types of HGN cards available in the market

1. The introduction into HGN (Horizontal Gaze Nystagmus) cards The usage of Horizontal Gaze Nystagmus (HGN) cards is now an integral component of field tests to determine sobriety in law enforcement organizations across the world. HGN is a...

ridox59289 · 18 September 2023 · 3
A comparison between different types of HGN cards available in the market