Abstract: Blow-molded containers such as the 1.75-liter size for liquor beverages have an everting grip problem. Using inwardly facing grip geometry, consisting of two convex surfaces that come together at an inward ridge, eliminates the problem. The combination of the two convex surface sidewalls further eliminates the need for lateral reinforcing ribs in both cold-fill and hot-fill containers. The curved sidewalls come together at an edge offset the central axis of the container.

Abstract: An electronic transaction payment system is provided having a vendor terminal associated with a vendor who provides goods or services to a purchaser, a vendor smart-card and a vendor smart-card reader for transmitting data to and receiving data from the vendor smart-card. The system also includes a purchaser smart-card reader which is connected to the vendor terminal and which is operable for transmitting data to and receiving data from a purchaser smart-card. In operation, payment for goods purchased by the purchaser is made between the purchaser smart-card and the vendor smart-card. In a preferred embodiment, the payment data is encrypted using an encryption key specific to the transaction between the purchaser and the vendor. A third party registry terminal may also be provided for providing validation of the vendor and/or the purchaser.