U.S. Patent Publication, 2015
The patent describes a safe card that that by default is in a blocked state so that no transcation can be made. The safe card can be activated for a limited time by an authorized user for the transaction.
Recommended citation: Aneja, N., and Aneja, S. "Anti-fraud computer implemented method for financial card transaction." U.S. Patent Publication 2015/0339,657, filed May 23, 2014, published Nov 26, 2015. https://patentimages.storage.googleapis.com/06/22/8e/674c30a57d0fe8/US20150339657A1.pdf