https://www.washingtonpost.com/local/social-issues/2020-census-likely-target-of-hacking-disinformation-campaigns-officials-say/2019/03/31/12e8d416-522d-11e9-88a1-ed346f0ec94f_story.html?utm_term=.0124fdde1c02 Households that don�t respond electronically will then receive paper forms by mail, and when enumerators knock on doors to follow up with those who still haven�t responded, they will intake respondents� information electronically, via an iPhone 8.