Public computers are useful when you need to print, present, upload, scan, or transfer a file quickly. The risk is that the USB drive may show more than the one file you meant to use, especially if it also carries work documents, photos, invoices, ID scans, or old project folders.
When the USB drive opens in File Explorer, normal folders and file names can be browsed by the person using the computer or anyone helping you.
Even if you only open one document, a public PC may show thumbnails, recent files, search results, file paths, or folder names while you browse for the file.
Many people reuse one USB drive for school, work, printing, client files, photos, and backups. Old folders are easy to forget until the drive is already plugged into someone else's computer.
For a free one-time approach, copy only the needed files to a clean USB drive. If you reuse the same USB drive often, GiliSoft USB Encryption gives you a better everyday workflow: public area for the files you need to use, secure area for private files that should not be visible without the password.