On this page there’s 4 highlights (view in Baymard Premium) outlining what Fitbit are doing right and wrong.
(Tip: use the arrows above or on your keyboard to navigate all 207 address validator examples.)

The screenshot was taken on October 26, 2021 and depicts Fitbit’s Address Validator. In total, we’ve reviewed 25 of Fitbit’s page designs. To see them all, visit the full Fitbit UX case study.