Abstract: There are provided systems and methods relating to checking and confirming merchandise purchased at shopping facilities. In one form, the system includes: a shopping cart containing merchandise items to be purchased; a sales transaction database; a point-of-sales system that creates transaction records identified by transaction identifiers; and a mobile device used by an employee that includes a sensor to scan a paper or digital receipt to obtain the transaction identifier and a camera to capture images of the items in the shopping cart. The system also includes a control circuit that receives the transaction identifier, accesses the database using the identifier to determine the purchased items; analyzes the images of the merchandise items in the shopping cart and creates a computer vision receipt listing detected items; compares the purchased items with the detected items; and takes an action if there is a discrepancy.

Abstract: The present application discloses a conductive membrane and a preparation method thereof, which belong to the field of membrane separation technology. The conductive membrane provided by the present application includes a porous base layer film, a porous intermediate layer film, and a porous conductive layer film which are disposed layer by layer in sequence; wherein at least some holes of the base layer film are communicated with holes of the conductive layer film through holes of the intermediate layer film, and material of the intermediate layer film is the same as material of the base layer film and of the conductive layer film. Regarding the conductive membrane provided by the present application, it can be coupled with electrochemical technology, so that the membrane exhibits new excellent properties at the same time of playing separating characteristic.