Many people may use ink cartridges to print their favourite snaps directly from a smartphone or tablet PC in future, as experts believe these technologies are becoming more widely used by amateur photographers.

The Metro's Andy Blackmore noted there are many apps available for these gadgets that can help a person edit their images.

He explained that, as they are usually dedicated to one specific task, they are far cheaper than feature-packed professional PC programs such as Photoshop.

David Rowan, editor of Wired, observed that the quality of shots taken using these devices has greatly improved over the last five years.

"With better image processing, greater storage space and high-quality light sensors, handsets are capable of creating much richer images," he said.

Mr Rowan noted they can also be more convenient, as people are more likely to be able to capture images in locations where they would not usually think to bring a camera.

This may be one reason why it was recently revealed by Flickr that the iPhone 4 has become the most popular photography hardware for images uploaded to the site, surpassing the Nikon D90.