| CPC G06Q 20/4016 (2013.01) [G06Q 20/208 (2013.01); G06V 20/52 (2022.01); G07G 1/0018 (2013.01); G07G 1/0045 (2013.01); G06Q 2220/00 (2013.01)] | 16 Claims |

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7. A method performed by a self-service commodity sales data processing device, comprising:
determining, during a transaction, that a plurality of commodities are taken out simultaneously based on an image of a commodity taken out from a commodity placing location;
determining, based on an image recognition technique, that the plurality of commodities taken out simultaneously comprise different commodities;
storing a quantity of the plurality of commodities taken out simultaneously;
reading information of each of the plurality of commodities taken out simultaneously;
determining that the information of each of the plurality of commodities taken out simultaneously is identical for every commodity of the quantity; and
based on the determination that the plurality of taken out commodities comprise different commodities, and the determination that the information of each of the plurality of commodities is identical for every commodity of the quantity, suspending the transaction, wherein suspending the transaction prevents the transaction from being a fraudulent transaction.
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