Abstract: Obtain first item data from a first client system coupled to a central server system. Identify a first modification object associated with the first item data. Provide the first modification object to the first client system. Obtain a user identifier from the first client system. Identify a first user associated with the user identifier as being eligible to receive the first modification object. Provide a first eligibility message to the first client system. Obtain second item data from a second client system coupled to the central server system. Identify a second modification object associated with the second item data. Provide the second modification object to the second client system. Obtain the user identifier from the second client system. Identify a second user associated with the user identifier as being eligible to receive the second modification object. Provide a second eligibility message to the second client system.

Abstract: First local data is obtained from a first client connected to a central server. The first local data is generated according to a first data format by a first point of sale system connected to the first client. The first point of sale system is associated with a first entity. Second local data is obtained from a second client connected to the central server. The second local data is generated according to a second data format by a second point of sale system connected to the second client. The first and second local data are filtered based on rules. A remote target is identified. Formatted data is generated from the filtered data based on an interface associated with the remote target. The formatted data has a third data format associated with the remote target, and appears to be associated with a single entity. The formatted data is provided to the remote target.

Abstract: Obtain first item data from a first client system coupled to a central server system via a WAN in response to the first item data being obtained by the first client system from a first point of sale system via a first LAN in response to the first item data being obtained by the first point of sale system at a first time. Determine whether the first item data is age-restricted. Provide, in response to determining the first item data is age-restricted, an age-restriction notification to the first client system via the WAN, the age-restriction notification being capable of preventing the first point of sale system from completing a transaction including the first item data unless a subsequent message indicating the transaction is eligible for completion.