Indeed. I'm confused by this line from the article > a study with 197 participants, the team could infer the identity of persons with almost 100% accuracy – in

Indeed. I'm confused by this line from the article > a study with 197 participants, the team could infer the identity of persons with almost 100% accuracy – independently of the perspective or their gait. The paper seems to make it clear that the technique still depends on gait analysis, but claims it's more robust against gait variations.