About: http://webisa.webdatacommons.org/446847544

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Companies such as BT have tested it, but there are questions as to whether the technology will be suitably accurate in all conditions.
http://www.w3.org/ns/prov#wasQuotedFrom	computerweekly.com