Sales information aggregation and processing system and sales information aggregation and processing method

A sales data aggregation server, comprising:

• a communication interface connectable to a network;
• a storage device;
• and
• a processor configured to:
• receive point-of-sale data from a plurality point-of-sale devices via the network and store the point-of-sale data in the storage device;
• receive receipt data from an electronic receipt server via the network and store the receipt data in the storage device;
• generate display information based on stored point-of-sale data;
• generate display information based on stored receipt data;
• generate display information based on both the stored point-of-sale data and the stored receipt data;
• and
• transmit generated display information to a user terminal via the network.

A sales data information processing method for a sales data aggregation system, the method comprising:

• receiving point-of-sale data from a plurality point-of-sale devices via a network and storing the point-of-sale data in a storage device;
• receiving receipt data from an electronic receipt server via the network and storing the receipt data in the storage device;
• generating display information based on both the stored point-of-sale data and the stored receipt data;
• and
• transmitting generated display information to a user terminal via the network.