Disclosed are embodiments for electronic commerce user interfaces. In some embodiments, a device is used to create an account on an electronic commerce system or create a listing for an item for sale on the ecommerce system. A first identifier of the device is stored by the ecommerce system. When a listing is generated by the account, an image representing an item for sale is included as part of the listing. The disclosed embodiments compare a second device identifier of a device used to capture the image with the first device identifier. If the two identifiers identify the same device, this provides an indication of confidence that the seller is in possession of the item represented by the image. This indication of confidence is then displayed when the listing is displayed to prospective buyers.