[Danna]

There are number of way you can do it.

1. If the value of passed parameter data is less than 4KB, which in you case would be, you can use session cookies, maybe in JSON format.

2. You can store the data in some other object or a document, which can be retrived by the destination page.

3. There is also an option of using Platform Cache.

4. You can use Custom Settings Methods of the Hierarchy type. Its a little complicated, but gets the job done and get it done securely.

5. You can use localStorage coupled with some JS that unloads the data from sending side and loads back on destination. However it has 2.5 million unicode character limit, which in turn way more than other methods, except document method that is.

I would recommend using cookies but you should encrypt the data or else it can be a security risk. Same is the case of using documents. Custom settings and platform cache have severe space limitations, as in 1MB per licence. So you may need to use them very judiciously.