"Some images might be already posted on social networks, so there's lots of places it can come from and lots of differences in the quality of the data at different resolutions on video on smartphones and handheld cameras," he said. Generally, the coarser the resolution, the less precise the result will be, he said.
"In the past there have been cases where software was used to correlate faces and abandoned objects. Software is even used to detect the amount of time a person spends in front of a display," Steinberg said. As the general quality of cameras goes up, the usability of the forensics tools increase as well, he said. " So there's much more there now to use."
Senior Editor Matt Hamblen contributed to this story.
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