Browser Local storage data

We are trying read clientside information which was written to browser local storage through html5.
How can we read browser local storage in vaadin.

Is there any alternative for read client side information from server or client can transfer information such as mac address or simple string values to server.

Thank you.

There is
for GWT. Then you “just” have to integrate it in Vaadin by creating a Custom Widget and add the Html5LocalStorage code to the client side.
Have a look at the Custom Widget chapter in this wiki:

BTW. In case you are using TouchKit, it contains a server side proxy for end users local storage. Pretty much waht Marius suggested.