Does the OPUS card use close physical proximity or WiFi networks to make payments?
OPUS card OPUS is a rechargeable, contactless stored-value smart card using the Calypso Standard and is used by major public transit operators in Greater Montreal and Quebec City, Quebec, Canada.
Equens Equens SE is a European full service card and payment processor headquartered in Utrecht, Netherlands, and with offices in Frankfurt, Stuttgart, Milan, Rome, Helsinki, and London.