Piggly Wiggly debuts feature, privacy expert slams new technology The Piggly Wiggly grocery chain has announced it will begin offering a high-tech payment feature allowing customers in several stores to pay using their fingerprints. With a touch of the finger to a light-sensitive pad, patrons will be able to pay for their groceries, provided they have an account in the store's system that can be debited, reported the Columbia, S.C., State. The paper says stores in Columbia and Charleston are set to install the technology. According to Pay By Touch, the San Francisco-based firm whose product is being used, the...