Encryption devices are tools used to secure data by converting it into a coded format that can only be read by authorized users. These devices use algorithms to scramble information, making it unreadable to anyone who does not have the correct decryption key. Common examples include hardware security modules and software applications that protect sensitive information during transmission or storage. These devices are essential in various fields, including finance, healthcare, and government, where protecting personal data and confidential information is crucial. By ensuring that only authorized individuals can access the data, encryption devices help prevent data breaches and maintain privacy.