We have staff that want to carry USB drives with confidential presentations and a way to encrypt the USB in case it is lost. I’ve looked over BitLocker, Folder Lock and VeraCrypt but each has a problem. First problem is that these USB drives need to work on several operating systems (Mac, Windows 7-10) that do not have the encryption software installed. VeraCrypt seems flexible but the users are not tech savvy and want nothing less than the simplest implementation. We also do not want to use encrypted usb keys as they are expensive to replace if lost. Are there options to run software that will run solely on the USB drive so the data can be accessed from most operating systems?