1. A method of confirming the identity of an item having an identifier, the method comprising: acquiring an image of the item having the identifier; extracting a first set of geometric point features from the image of the item; reading identification code data from the identifier on the item; retrieving a second set of geometric point features from a feature database based on the identification code data, the database comprising geometric point features associated with a plurality of known items; comparing the first set of geometric point features from the image with the second set of geometric point features corresponding to the identification code data; and determining whether the item in the image corresponds to the identification code data read from the identifier on the item based on comparison of the first set of geometric point features with the second set of geometric point features.