Revoke.cash is a preventative tool that helps users practice proper wallet hygiene by managing token approvals. When using dapps, users grant them permission to spend tokens and NFTs, and if these approvals are not revoked, the dapp can access the funds indefinitely. Revoke.cash allows users to connect their wallet, inspect their approvals, and revoke those no longer in use to prevent unwanted access and mitigate risks from hacks, exploits, and phishing scams. The platform also offers a browser extension to warn users about potentially harmful signatures. It is important to note that Revoke.cash cannot recover stolen assets but helps prevent future losses.