"Some of the technologies in which a mobile scanning device is moved around the foot, such as those utilizing the 3D Occipital Structure Sensor, approach the accuracy of more conventional laser scanners that require placing the foot against a flat scanner surface. But photogrammetry-based mobile scanning systems, in which a software algorithm translates 2D photographs of the foot into a 3D image, are unlikely to produce an accurate representation of foot structure, Archer said."

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