Singapore and Thailand are in discussions about connecting their national digital payment systems to forge an unprecedented regional alliance, as officials step up efforts to curb the use of cash.The link would bring together Southeast Asia’s first national digital-payment platforms, Singapore’s PayNow and Thailand’s PromptPay, said Naphongthawat Phothikit, director of payment systems policy at the Bank of Thailand.“The Monetary Authority of Singapore and the Bank of Thailand are exploring th