Flash payment is called offline micropayment, that is, for some small consumption, you don't need to enter a password, sign or insert a card, you just need to "wave your hand" on the POS machine to realize payment quickly. There is a round hole in the upper right corner of the "flash payment card" so as to be buckled with the key or mobile phone. If it's not a "mini" credit card, it's just like a mobile phone accessory.
The "flash payment card" sets the threshold for "small amount" consumption, which well combines the characteristics of fast payment. As an innovation in banking financial services, financial IC cards will be gradually issued to replace traditional magnetic stripe cards, and "flash payment" may become an important way for citizens to make small payments in the future.