<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">verifiers</topic></authority><related type="broader"><topic>data processing devices</topic></related><variant type="other"><topic>verifier</topic></variant> <note xml:lang="en"><![CDATA[ Mechanical devices, usually in the context of punch cards or tape data, that check the correctness of data by comparing against additional sets of the same data, or original sets of data.  ]]></note></mads>