Can the Square credit card reader (SquareUp.com) work withwifi-only (non-cellular) versions of Ipads? The Squareup.com website says that internal GPS is required butIâ€™ve heard that the wifi-only Ipads donâ€™t have GPS chips. Iâ€™ve repeatedly asked Square.com but canâ€™t get a straightanswer. I donâ€™t want to buy an expensive Ipad only to find out it wonâ€™t work. Thanks for any help!