携带纸币进出一个国家对于避税者和罪犯来说代价高昂；接受虚拟货币的日本有可能成为瑞士式的避税港 — — 银行保密法让位给了技术。
Carrying paper currency in and out of a country is a major cost for tax evaders and criminals; by embracing virtual currencies, Japan risks becoming a Switzerland-like tax haven – with the bank secrecy laws baked into the technology.