Technology companies can ensure that biometric data is used ethically by adhering to strict ethical guidelines and principles when collecting, storing, and processing this information. Companies should prioritize user consent and transparency in their practices, clearly informing users about how their biometric data will be used and providing them with options to opt-out if desired. Additionally, implementing strong encryption methods and secure storage systems can help mitigate the risk of unauthorized access or breaches that could compromise individuals' safety. Regular audits by independent third parties can also verify compliance with ethical standards related to biometric data usage.