Self-service commodity sales data processing device and method thereof

A method for causing a computer as a self-service commodity sales data processing device, which is provided with a reading component that reads information on a commodity taken out from a commodity placing component to perform functions comprising:

• determining whether a plurality of commodities were taken out simultaneously based on an image of the commodity taken out from a commodity placing component;
• determining whether a plurality of taken-out commodities are different commodities or identical commodities if it is determined that the plurality of commodities are taken out simultaneously;
• determining whether the plurality of commodities read by the reading component are the identical commodity if it is determined that the taken-out commodities are different commodities;
• and
• suspending the transaction if it is determined that the commodities are identical commodities.

A self-service point of sale terminal, comprising:

• a take-out determination component for determining whether a plurality of commodities are taken out simultaneously based on an image of a commodity taken out from a commodity placing component;
• a first identical termination component for determining whether a plurality of taken-out commodities are different commodities or identical commodities if the take-out determination component determines that the plurality of commodities are taken out simultaneously;
• a reading component for reading information of the taken-out commodities;
• a second identical determination component for determining whether the plurality of commodities read by the reading component are the identical commodity if the first identical determination component determines that the taken-out commodities are different commodities;
• and
• a suspension component for suspending the transaction if the second identical determination component determines that the commodities are identical commodities.