Another concern that warranted further study was the fact that although only banks and post offices were authorized to handle remittances, the cash-based economy and significant cash inflows from migrant workers suggested the existence of alternative money transfer systems.
另一项值得关注的问题是，虽然只有银行和邮局有权处理汇款，现金经济和来自移民工人的大量现金流入则表明存在其他资金转账系统。