I agree that it is probably not a big concern today but given how fast imaging technology is improving, fingerprints and retinas can probably be accurately imaged from meters in the not too distant future.
Unless the camera is inches away and has time to focus. Then those ridges and whorls and loops could find their way into a database ...
Without going into details, the article said the researchers were able to image usable fingerprints from several meters.
One feature that impressed us the most was how fast the Galaxy S7's camera can focus compared to the iPhone 6s Plus. It's incredibly fast and it means you can take sharp, focused pictures more quickly with less risk of missing the moment you want to capture.