I am creating an App that pulls data from a file on my server. That file gets data from my database, based on GET values that are passed through the URL.

I would like to keep this feed closed - that is, I don't want people finding the datasource and reading the data on their own. I considered sending an alphanumeric id along with the url string, but if they can find the URL that I am calling, then there won't be anything preventing them from grabbing that alphanumeric id also.

I am looking for any ideas or experiences that might help me here.

Thanks.