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This paper considers three issues that arise in creating an algorithm for robust detection of textured contact lenses in iris recognition images. One issue is whether accurate segmentation of the iris region is required in order to achieve accurate detection of textured contact lenses. Our experimental results suggest that accurate iris segmentation is not required. A second issue is whether an algorithm trained on images acquired from one sensor will generalize well to images acquired from adoi:10.1109/access.2015.2477470 fatcat:p7swzhukefg7picib6a6x6xqli