About: http://webisa.webdatacommons.org/64902627

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	Two types of devices are primarily used: radio frequency monitors that generate an alert when a wearer strays from a fixed location, such as a home, and GPS units that can track wearers all over town.
http://www.w3.org/ns/prov#wasQuotedFrom	kimt.com