wèi shén me为什么yǒu xiē有些bā xī巴西rén人mài卖zì jǐ自己de的hóng mó虹膜shù jù数据？
Recently in São Paulo, Brazil, many people have been scanning their eye irises and receiving some cryptocurrency as payment.
Many people see this as a money-making opportunity, for example, Débora and her son both participated.
They only need a few minutes to complete the scan and then they receive the money.
Some people want to invest this money, while others just want a little extra income.
The company says that this iris data can help them develop safer identity verification technologies, such as making banks and shopping websites more secure.
However, some experts worry that this practice might put lower-income people at risk because they are giving very important personal information to companies.
Later, the Brazilian government found that this project might be unsafe and ordered the company to stop exchanging money for iris data.
Many people also found that it is not easy to withdraw the cryptocurrency.
Although the company says they do not keep everyone's personal information, many people are still worried that their data might be misused.
Now, everyone is discussing whether selling their iris data is really a good idea.