The biggest obstacle so far has been the inability to protect copyright and ensure that the author or publisher benefits from their efforts or investment. Poptel offers an extremely secure method of encrypting and packaging almost any type of data within a PDF file.
Users can un-lock the file for use only after having paid for a unique key over the Internet.
Once paid for via credit card transaction, the PDF can only be opened on the PC used to complete payment. Opened files copied onto other PCs automatically become locked again, so even if files are passed between users the same security constraints and payment conditions apply. By separating out the security and payment function from the content itself, our Digital Rights Management service allows publishers to make changes on the fly based on the type of reading device, payment method and purchase model they wish to apply to their content.