On this page there’s 3 highlights (premium only) outlining what GAP are doing right and wrong. (Tip: use the arrows above or on your keyboard to navigate all 111 address validator examples.)
The screenshot was taken on May 11, 2016 and depicts GAP’s Address Validator. In total, we’ve reviewed 46 of GAP’s page designs. To see them all, visit the full GAP UX case study.