How to make files Google-searchable BUT INACCESSIBLE without Password

I want to be Googleable but allow access to full content only upon payment

[TibetanScriptDesign]

Hi Everyone,

I have a similar problem, but in addition to wanting to sell files from my website, I would also like to ensure that the content of the files is Google searchable without users being able to view the entire content. In other words I want surfers to find me but prevent them from accessing the full content of files without either purchasing them or supplying a password.

More specifically, In the case PDFs:
Users who click a google search result to arrive at my site should not be allowed to see the full text of the content they're trying to access.
A random example:
Search for <specifics removed> and [a certain site in the results] only shows you the first page, the rest of the documents can only be accessed via a password.

In the case of images:
I have created many images containing exotic script designs. All files have very long, descriptive names, viz. they are rich in keywords. Adding superimposed logos or similar protection means a lot of work. Is it possible to simply upload all images into a single folder, make the file(name)s in the folder searchable, but the files themselves inaccessible without a password?

Thanks in advance!

[edited by: lorax at 12:28 pm (utc) on May 19, 2010]

[digitalv]

There isn't any way to do this.

I mean, if you're technically inclined you could make it where the Google IP addresses can access the document and then require a password for all other IP's, but even in that case they could always just view the cached version on Google.

Only work-around would be to create a web page that contained some of the content (what you were willing to share) and then a link to the PDF. This of course prevents the entire PDF from being indexed, but if there are parts you're OK with sharing and parts you aren't you can make a "sample" of the document on the website and then they can pay to download the full version.