WHEN the Nigerian Central Bank introduced newly designed currency notes in November 2022 and a month later put a cap on the maximum amount of hard cash that individuals and corporations could withdraw, the idea was to tame money laundering in the country. During that year’s Christmas festive season and in the run-up to the 2023 Nigerian presidential election in February 2023 –– two high spending seasons –– the country was hit with shortages of the naira currency. Nigerians, however, appear to have found solutions to the problem, according to official statistics. In December 2023 alone, 968 million transactions took…