For my new projects (like MyCloud) I needed a way to securly transfer my json codes from js to php and back. Why you say?
Cause, with plugins like firebug, you’re able to send custom POST values etc. So you can send modified json code to hack/flood a server with requests. This is a great security risk. So I’d like to work with session ID’s generated by php to authenticate the client based on his IP and session ID. Look, I’ve drawn a map (jeuj!)