| 摘要 |
A value unit for conveying or transferring value, currency, information, data, images, video and/or audio and comprising a thin medium for attachment to mail, packages, documents or other items to be transferred or exchanged or for use as a financial or informational card, check or other instrument, a readable/writeable memory device disposed in the medium for receiving, storing or transferring data, information and/or images and one or more displays, disposed in the medium, for visual depiction of information or images from data, information or images stored in the memory. A number of embodiments are described with additional, optional devices including an interface device comprised of a plurality of raised areas for coupling to corresponding contacts in the mating connector, the areas comprised of a material for conducting optical or electrical energy or signals and surrounded by insulating material that defines the areas and prevents the transfer of energy or signals between the areas and a sensing system for detecting if a container has been opened or tampered with.
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