Radio-frequency identification tags for tracking immigrants will not be used in the so-called US-VISIT system, which records fingerprints for all foreign visitors. Government Computer News reports. The Homeland Security Department determined through testing that systems to read the RFID tags did not reliably detect them while embedded in I-94 documents during a test. In other news, The Washington Post reports that Maryland Del. Doyle Niemann recently proposed legislation that would tag children with global-positioning chips as part of a truancy-reduction plan. Niemann, a Democrat, said, "It's going to be done unobtrusively. The chips are tiny and can be put into a hospital ID band or a necklace."