Section 403.406 - Negligence contributing to forged signature or alteration of instrument(1) A person whose failure to exercise ordinary care substantially contributes to an alteration of an instrument or to the making of a forged signature on an instrument is precluded from asserting the alteration or the forgery against a person who, in good faith, pays the instrument or takes it for value or for collection.(2) Under sub. (1), if the person asserting the preclusion fails to exercise ordinary care in paying or taking the instrument and that failure substantially contributes to loss, the loss is allocated between the person precluded and the person asserting the preclusion according to the extent to which the failure of each to exercise ordinary care contributed to the loss.(3) Under sub. (1), the burden of proving failure to exercise ordinary care is on the person asserting the preclusion. Under sub. (2), the burden of proving failure to exercise ordinary care is on the person precluded. Although a claim for misrepresentation may "supplement" the provisions of the UCC, it may not supplant them. A bank customer's failure to comply with ss. 403.406 and 404.406 precluded the customer's claim for strict-liability misrepresentation. Weber, Leicht, Gohr & Associates v. Liberty Bank, 2000 WI App 249, 239 Wis. 2d 461, 620 N.W.2d 472, 99-1557.