By Paresh Dave OAKLAND, Calif. (Reuters) – Apple Inc plans to allow users to more tightly lock down photos and notes stored on its iCloud service and require a physical security key when logging in from a new device, it said on Wednesday. The forthcoming options, along with another security measure for Apple’s iMessage chat program, are particularly aimed at celebrities, journalists, activists, politicians and other high-profile individuals heavily targeted by hackers, the company said. The iPhone maker said that though it was not aware of breaches to iCloud servers or iMessage exchanges, hack…