In the past, only books on this computer could be read on this machine, but not on other machines. Except for the username and password. The book you ordered may never be seen again. The solution is to decrypt it when you can read it. Virtual printers are generally used online, which is better. I have been using FinePrint 5. 10, and the effect is very good, because I have tried other virtual printers. I'll print it in tiff format first, with pictures. Then it is converted into png format, which is the format I decided after many experiments. If it's not small print with footprints, such as chemistry or physics, it's ordinary. If it is used for reading, there is no problem.