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Working Paper
CardSim: A Bayesian Simulator for Payment Card Fraud Detection Research
Payment fraud has been high in recent years, and as criminals gain access to capability-enhancing generative AI tools, there is a growing need for innovative fraud detection research. However, the pace, diversity, and reproducibility of such research are inhibited by the dearth of publicly available payment transaction data. A few payment simulation methodologies have been developed to help narrow the payment transaction data gap without compromising important data privacy and security expectations. While these simulation approaches have enabled research advancements, more work is needed to ...
Working Paper
This is what's in your wallet... and here's how you use it
Models of money demand, in the Baumol (1952)-Tobin (1956) tradition, describe optimal cash management policy in terms of when and how much cash to withdraw, an (s, S) policy. However, today, a vast array of instruments can be used to make payments, opening additional ways to control cash holdings. This paper utilizes data from the 2012 Diary of Consumer Payment Choice to simultaneously analyze payment instrument choice and withdrawals. We use the insights in Rust (1987) to extend existing models of payment instrument choice into a dynamic setting to study cash management. Our estimates show ...
Working Paper
Chargebacks: another payment card acceptance cost for merchants
Although chargebacks are perceived as one of the major cost components for merchants to accept card payments, little research has been conducted on them. To fill that gap, this paper describes the current chargeback landscape by generating detailed statistics on chargebacks for signature-based transactions. Our data are from merchant processors, which, altogether, processed more than 20 percent of all signature-based transactions in the United States. For Visa and MasterCard transactions, chargebacks merchants receive are, on average, 1.6 basis points (bps) of sales number and 6.5 bps of ...
Discussion Paper
Contactless Payment Cards: Trends and Barriers to Consumer Adoption in the U.S.
Since 2017, the payment cards industry has undertaken a concerted effort to bring contactless “tap-and-pay” credit and debit card products to consumers. Payment networks, card issuers, and banks have worked to ensure that contactless cards, which communicate payment information wirelessly to point-of-sale terminals through Near Field Communication technology, are at the forefront of consumers’ minds when they make a purchase. Missing from the discussion of contactless payments, however, is an understanding of consumer interest in the technology; indeed, the current activities are a ...