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n4google.
isaphttp://webisa.webdatacommons.org/prov/
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provhttp://www.w3.org/ns/prov#
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Subject Item
isa:88198708
rdf:type
prov:Entity
prov:value
Viewer/User Presence Monitoring as an Addition to Verification Systems In various embodiments, the technology is in place to inexpensively sense the presence of a viewer, and (from a restricted family or group of individuals) the identity of a viewer at such things as a computer monitor or receiver of programming.
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n4:com
Subject Item
isap:39777634
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isa:88198708