Abstract: A method and system for providing accessibility to a visualization graph may include receiving a request to begin navigating the visualization graph, the visualization graph displaying a plurality of items of information, each item of information being displayed as a node and the visualization graph representing a connection between two nodes with a connecting line, identifying a central node in the visualization graph, determining a navigation order for the visualization graph based on at least one of a strength of the connection and a type of the connection between an item of information associated with the central node and items of information associated with non-central nodes, starting to navigate the visualization graph at the central node, continuing to navigate the visualization graph to non-central nodes in accordance with the determined navigation order, and providing an audio output during the navigation to provide accessibility to the visualization graph for visually impaired individuals.

Abstract: A method and system for providing accessibility to a visualization graph may include receiving a request to begin navigating the visualization graph, the visualization graph displaying a plurality of items of information, each item of information being displayed as a node and the visualization graph representing a connection between two nodes with a connecting line, identifying a central node in the visualization graph, determining a navigation order for the visualization graph based on at least one of a strength of the connection and a type of the connection between an item of information associated with the central node and items of information associated with non-central nodes, starting to navigate the visualization graph at the central node, continuing to navigate the visualization graph to non-central nodes in accordance with the determined navigation order, and providing an audio output during the navigation to provide accessibility to the visualization graph for visually impaired individuals.

Abstract: A system for managing bar or restaurant tabs includes a payment card storage apparatus, such as a carousel, to receive and store payment cards under computer control, and a payment card reader to read identifying information from the payment cards that are to be stored in the payment card storage apparatus. The system permits a server to conveniently receive and store a payment card to secure a patron's tab, and then return it to the patron at the time the tab is closed and paid out. An associated point-of-sale system displays tab information and a list of names of those patrons having open tabs. A particular patron's card can be returned from the payment card storage apparatus by selecting the patron's tab from the list. The system may further be applied in any situation in which a debt or obligation can be secured by the possession of a personally-identifiable token that has, holds or permits access to value.

Abstract: A system for managing bar or restaurant tabs includes a payment card storage apparatus, such as a carousel, to receive and store payment cards under computer control, and a payment card reader to read identifying information from the payment cards that are to be stored in the payment card storage apparatus. The system permits a server to conveniently receive and store a payment card to secure a patron's tab, and then return it to the patron at the time the tab is closed and paid out. An associated point-of-sale system displays tab information and a list of names of those patrons having open tabs. A particular patron's card can be returned from the payment card storage apparatus by selecting the patron's tab from the list. The system may further be applied in any situation in which a debt or obligation can be secured by the possession of a personally-identifiable token that has, holds or permits access to value.