We have had so many requests about adding the download time and journal's URL to the article that is being downloaded.
I'm not familiar with php coding so I've created a web service in C# which does the job.
It receives the PDF address and returns the modified file.
for example, this is the output (address, date and time of download are added to the left margin of each page):http://www.medinfotechs.com/pdf/watermark.asmx/watermark?input=http://www.ijnmr.mui.ac.ir/index.php/ijnmr/article/view/505/432
This is just a test version and is not finished yet, but is functional.
Can any one help me adding this web service to OJS?
It could be added as a plugin which is accessed at the download time.
Any help is appreciated