The Chrome LinkedIn Plugin enables you to update a candidate record using the details found on their LinkedIn profile.
To do this search in LinkedIn for their profile.
When the profile loads, open up the Contact Info from the top of the LinkedIn profile. Then from the extensions on the top of the browser, select Chameleon-i option, this will display on the top right side of your screen. To then update the record that is already in the database, select the 'Link To Existing Contact'.
Then select the red candidate icon and search for the record. When you have selected this, it will update the record in Chameleon-i.