Answer: A torus is a type of geometric shape that is essentially a doughnut-like structure, with a hollow center and a curved outer surface. It is a three-dimensional object made up of curved surfaces and is often used in mathematics, architecture, and engineering. Metamask, Trust, iframe, and Aethereum are all digital wallets that can be used to store, send, and receive digital currencies such as Ethereum. These wallets are designed to make it easier for users to securely store, send, and receive digital currencies. They are also designed to make it easier for users to interact with decentralized applications (dApps) and smart contracts. As such, many of these wallets support the use of torus, allowing users to securely interact with dApps and smart contracts on the Ethereum blockchain.