The phenomenon of "cashless society" attracts people's attention, mainly due to the rapid development of mobile payment in recent years, covering people's clothing, food, and shelter, and spreading to the corners of cities and towns, causing some people to change the habit of using cash. Actively promote " The construction of a cashless society has far-reaching significance: first, it will help lower the threshold of financial services and better promote economic development; second, it will help reduce and reduce the use of cash and management costs, and reduce the cost of currency issuance, Accelerate the flow of funds; Third, it helps to establish a credibility system to identify, prevent and combat various types of illegal and criminal activities related to cash transactions, bribery, and bribery, and effectively curb corruption. Which quality does the text does not mention about "cashless society"? ['Benefits to the financial industry.', 'Reasons for concern.', 'Relationship with currency issuance.', 'Impact on relationships.']