About: http://webisa.webdatacommons.org/441395151

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	If a payment is an optical payment settlement, a customer uses a portable unit 581 which is an optical payment unit and transmits the card information to the optical transmitter 582 connected to the computer 583 (step 594).
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com