ADA Handle is a Cardano project that allows people to send their ada to a simple address. Instead of those long 50+ character strings, we can now send ada by sending to an ada handle in the form $name. In order to set these up, you have to buy the ada handle as an NFT. Once you get the NFT, people will be able to send ada to the address by typing in the ada handle. This definitely makes Cardano easier yo use, but I am not sure if this project will be replaced by a more open source project down the road. Currently it is pretty expensive to mint an ada handle, and I personally am not "investing" in "rare" ada handles.