# Technology **Tokens** The cryptocurrencies involved in DriveSafe are known as $DriveS and $FUEL. Both tokens can be bought, sold, or swapped on exchanges. To transfer this token, you will need to have a compatible wallet such as [MetaMask](https://metamask.io/). To send tokens from a wallet to an exchange, or from a wallet to another wallet, you will need to pay the transactions fees. \ **NFTs** The DriveSafe cars use a technology called NFTs (or non-fungible tokens). An NFT is a unit of data stored on a blockchain that certifies a digital asset to be unique and therefore not interchangeable. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://whitepaper.drivesafe.tech/technology.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.