1. Login to your Orkut profile.
2. Navigate to Setttings >> click on Privacy tab
3. The very first option in privacy tab is “enable photo tagging“. Uncheck this option.
4. Photo tagging option has been disabled on your profile.
5. You are done.

Now whenever someone will try to add a tag to your photos on Orkut, he will get a photo tagging disabled notification saying, “The friend that you are trying to tag has disabled photo tagging“.