ViPNet [Safe Disk] provides transparent "on-the-fly" encryption for your notebook or desktop personal computer. In the working process the system is creating files so-called "containers", whose size is specified by user; the files are displayed as logic disks. Password authentification is performed once on the entire volume. Once access has been granted to the volume, users can create, read, write, drag, drop and copy files to the volume just as if it were another hard drive. Best of all, since [Safe Disk] appears to Windows as another drive letter, it is instantly compatible with almost any standard business application, word processor, spreadsheet or database program. All information that the user stores on the disks is kept encrypted. When read, the information automatically is being decrypted, when saved-encrypted. This process is completely transparent for a PC user.