Abstract: A technique for identifying an opt-out status for a user's mobile or other computing device without relying exclusively on client-side storage or primarily on the use of non-determinative mechanisms is discussed. Embodiments provide server-based or otherwise hosted techniques of accurately identifying devices of users that wish to opt-out of having their device activity tracked. These techniques enable accurate identification of a device's opt-out status even in the absence of a client-side opt-out indicator.

Abstract: An improved technique for identifying a user's mobile device is discussed. A persistent and unified identifier that bridges mobile app to mobile web and to other web browser-compatible mediums is utilized. Using a unique verification identifier, the unified identifier is consistently verified, revived and distributed across application and browser mediums.

Abstract: A system and method of managing unavailable items in shared screen data which provides access to modified screen data substantially simultaneously. The system includes a first computer including a display for displaying a screen containing items from screen data including modified screen data during a transaction. The modified screen data reflects that at least one of the items is unavailable. The first computer shares the screen data with a second computer. The first computer is also for displaying an indication that the at least one item is unavailable substantially simultaneously following modification of the screen data and upon selection of the at least one item at one of the first and second computers.

Abstract: A system and method of managing unavailable items in shared screen data which provides access to modified screen data substantially simultaneously. The system includes a first computer including a display for displaying a screen containing items from screen data including modified screen data during a transaction. The modified screen data reflects that at least one of the items is unavailable. The first computer shares the screen data with a second computer. The first computer is also for displaying an indication that the at least one item is unavailable substantially simultaneously following modification of the screen data and upon selection of the at least one item at one of the first and second computers.