Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
How does the improved convenience of electronic payments affect consumer payment choice and cash demand? We study the staggered, quasi-random introduction of contactless debit cards by a retail bank. We use account-level data and compare transactions which are eligible for contactless authentication to transactions which are not. We identify a significant convenience effect on debit card use at the intensive margin. The convenience elasticity is strongest among younger clients. Treatment effects increase over time, coinciding with increasing merchant acceptance. The effect on cash demand is economically small and statistically insignificant. We also find no effect on consumer spending.