What are some of the most useful inventions made recently?

Perhaps the most useful inventions that have been made recently is the cryptocurrency. Cryptocurrencies have only made their way into the financial world about a decade back. Before that, the concept of cryptocurrencies was only to be found in the books that students study at the highest level of data sciences. The introduction of cryptocurrencies to the financial world has made many changes and have solved a lot of financial paradoxes.

Moreover, a lot of people find the anonymity that cryptocurrencies offer very useful, especially because they are more like money which is decentralized and hence are not controlled by a single entity.