Editing Census (section)

==Technology==
Censuses have evolved in their use of technology; censuses in 2010 used many types of computing. In Brazil, handheld devices were used by enumerators to locate residences on the ground. In many countries, census returns could be made via the Internet as well as in paper form. DSE  is facilitated by computer matching techniques that can be automated, such as [[propensity score matching]]. In the UK, all census formats are scanned and stored electronically before being destroyed, replacing the need for physical archives. The record linking to perform an administrative census would not be possible without large databases being stored on computer systems.

There are sometimes problems in introducing new technology. The US census had been intended to use handheld computers, but cost escalated, and this was abandoned, with the contract being sold to Brazil. The online response has some advantages, but one of the functions of the census is to make sure everyone is counted accurately. A system that allowed people to enter their address without verification would be open to abuse. Therefore, households have to be verified on the ground, typically by an enumerator visit or post out{{clarify|date=May 2019}}. Paper forms are still necessary for those without access to the internet. It is also possible that the hidden nature{{clarify|date=May 2019}} of an administrative census means that users are not engaged with the importance of contributing their data to official statistics.

Alternatively, population estimations may be carried out remotely with [[geographic information system]] (GIS) and [[remote sensing]] technologies.<ref>
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