In a party-line 50-48 vote Thursday, senators approved a resolution to undo sweeping privacy rules adopted by the Obama-era Federal Communications Commission.
New technology helps trackers follow consumers' digital imprints — including across devices — through browser settings, battery levels and other details.
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Dartmouth College researcher Timothy Pierson holds a prototype of Wanda, which is designed to establish secure wireless connections between devices that generate data.
Eli Burakian/Dartmouth College