Flashpaper provides you with a unique link that you can use to send a password or file to someone else. For security purposes, the link is only active for 72 hours. In the main menu, you can either generate a link by entering text or by providing a file. This link can then be opened by anyone and viewed. However, this can only be done once, after which the data is destroyed. This way, if the intended party tries to open the link and they can't, it means that someone has already accessed it.