As its most basic function, @herotag allows associating complex pieces of information, such as a wallet address, to a human-readable name. This means that instead of sending money to erd1hmlnypa0c9x7canxgdsue86ckla0zekv0258f2q40ady50v8yxc92y5k2y you can just send it to @alicejohnson

Note: Crypto transactions take place on public blockchains. Your @herotag is public and advanced users can look up your address on the blockchain and view your transactions history. Turning visibility OFF (from the Profile Info screen) will make your herotag private only inside xPortal App, but not on the blockchain.