Most of the photos I have posted here carry a reasonably discrete signature along the lines of “2018 © bjornarhaveland.net”. This is merely to identify the images if they should appear elsewhere. A signature is not a protection against image theft. They can far to easily easily be removed or obscured. However for my part it serves as a sort of calling card for anyone who finds a photo of mine on another website, whether I’ve posted them there myself, such as Instagram or Facebook, on other websites that have “borrowed” the images with or without permission (provided the signature is still intact), or through search engines, to contact me via my website, if they should be interested in that photo, or in seeing any other photos of mine.
The signature is not to be considered a part of the actual picture, and it will not appear on prints, unless specifically requested so by the buyer.