A lenslet array having variously shaped and sized lenslets, where the lenslets are rotated andor tilted, reducing gap images in an image formed by pixelssubpixels, where the pixelsubpixels have gaps between each other forming the gap images. The invention further relates to methods of preventing, pretreating, or treating conditions associated with HIF, including ischemic and hypoxic conditions. A received address data file profile is identified for the uploaded address the. The safer and less costly on-line transaction methods and the more trustable on-line seller-buyer agreements offered by the present invention can help promote the trustworthiness and the brand value of an e-store or a payment institution.