As digital wallets and 'tap to pay' become ubiquitous, a heated debate has emerged over whether to legally mandate that all businesses must accept physical cash. While digital payments offer efficiency, critics argue that a completely cashless society creates a surveillance state and excludes vulnerable populations like the elderly or homeless who rely on physical currency. Proponents of a mandate argue that cash is a vital fail-safe for civil defense during cyberattacks and guarantees personal privacy. Opponents argue that legally mandating cash imposes dangerous security risks on shop staff and facilitates the black market economy.