Kensington has released its new SecureBack Rugged Case, geared toward businesses that use an iPad and a Square reader to conduct their sales. The dual-layer case for 9.7-inch iPad, iPad Air or iPad Air 2 has a non-slip grip to keep the device in the user’s hand (and rubber cushioning to keep it safe when it falls out), along with a rotating hand strap and padded shoulder strap to provide different carrying options throughout the day. Cover plates…