Everyone works within his/her comfort zone, so I am not suggesting that you go against your instincts. But every person to whom you have written a check in your life has had access to your name, address, bank routing number, account number, and signature. Ask your banker if they refuse EFT requests that arrive electronically with the proper coding, and if they will refund your money if you are defrauded. You may not like the answer! Every hospitalo and hotel clerk who has looked at your passport, perhaps even held onto it overnight, has the opportunity to copy it or the information on it (they almost always write down your passport number in their guest log, sometimes a requirement from the junta). Everyone who has handled your credit card has the name, number, and "secret" code from it. Fortunately, credit card companies absorb most of the fraudulent internet and telephone fraudulent charges, but often there is no legal requirement that they do so. None of this leaves me feeling comfortable, but I refuse to supplement the paranoia it causes by retreating from the world.
Yes, a photo of a simple name, address, and phone number on a piece of paper is probably sufficient for the return of your camera from an honest person and protects a little bit against other fraud, so I revise my suggestion to "make that your first photo on the camera." And I know that even with just your name and address, I can get your birth date month and year, property records, aerial photo of your house, and residence history for free starting from Zabasearch, but I can probably do that without your camera, too!
Once again we have the choice to live on our knees or die standing up.