A computer implemented method for determining order information, wherein the method is used to determine an association between a user and a commodity selected and purchased by the user, the method comprising: determining i) location information of the commodity in a convenience store and ii) location information of the user in the convenience store; determining, based on the location information of the commodity and the location information of the user, that the commodity and the user are in an exit area of the convenience store; performing, by a facial recognition device installed at the exit area, human gesture recognition on the user to obtain gesture data of the user; determining, by a reader installed in the exit area and based on a signal sent by a positioning label on the commodity, a location of the positioning label to obtain location information of the commodity in the exit area, wherein the signal comprises information representing the commodity; determining, based on the gesture data of the user and the location information of the commodity in the exit area, whether a gesture of the user indicates that the user is taking the commodity, the determining comprising i) identifying, using the gesture data, a) a user body part that corresponds to the location information of the positioning label and b) hand gestures made by the user, ii) determining whether the identified user body part and hand gestures made by the user indicate that the user is holding the commodity, and iii) in response to determining that the identified user body party and the hand gestures made by the user indicate that the user is holding the commodity, determining that a gesture of the user indicates that the user is taking the commodity; and in response to determining that the gesture of the user indicates that the user is taking the commodity, adding the information representing the commodity to an order of the user. determining i) location information of the commodity in a convenience store and ii) location information of the user in the convenience store; determining, based on the location information of the commodity and the location information of the user, that the commodity and the user are in an exit area of the convenience store; performing, by a facial recognition device installed at the exit area, human gesture recognition on the user to obtain gesture data of the user; determining, by a reader installed in the exit area and based on a signal sent by a positioning label on the commodity, a location of the positioning label to obtain location information of the commodity in the exit area, wherein the signal comprises information representing the commodity; determining, based on the gesture data of the user and the location information of the commodity in the exit area, whether a gesture of the user indicates that the user is taking the commodity, the determining comprising i) identifying, using the gesture data, a) a user body part that corresponds to the location information of the positioning label and b) hand gestures made by the user, ii) determining whether the identified user body part and hand gestures made by the user indicate that the user is holding the commodity, and iii) in response to determining that the identified user body party and the hand gestures made by the user indicate that the user is holding the commodity, determining that a gesture of the user indicates that the user is taking the commodity; and i) identifying, using the gesture data, a) a user body part that corresponds to the location information of the positioning label and b) hand gestures made by the user, ii) determining whether the identified user body part and hand gestures made by the user indicate that the user is holding the commodity, and iii) in response to determining that the identified user body party and the hand gestures made by the user indicate that the user is holding the commodity, determining that a gesture of the user indicates that the user is taking the commodity; and in response to determining that the gesture of the user indicates that the user is taking the commodity, adding the information representing the commodity to an order of the user.