| http://www.w3.org/ns/prov#value | - For example, if a key is physically lost or stolen, the system may be so FIG. 4 is a block diagram of the controland information signal handling employed in the remote terminal device as I I used at the site of a credit transaction; FIG. 5, diagrammatically illustrated, in logic form, shows an overall key-card identification and credit accounting system. constructed inaccordance with the invention
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