About: http://webisa.webdatacommons.org/272858959

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	Therefore a useful feature on such a display is a sensor, such as an IR sensor or UV emitter and sensor combination that, at minimum, can determine whether someone is standing close to the display (and presumably looking at it) or not.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com