You can now read 10 articles in a month for free on BostonGlobe.com. Read as much as you want anywhere and anytime for just 99¢.

The Boston Globe

Business

FBI sifting for clues in mountains of evidence

Software tools offer limited help to federal agents analyzing thousands of hours of video recordings

The FBI said it has received a “tremendous” amount of video from the public taken near the Marathon’s finish line where bombings killed three people and stunned the nation Monday.

Crucial evidence could turn up in video shot on smartphones and other recorders. The challenge: How to sort through all those images quickly and effectively.

Loading comments...

You have reached the limit of 10 free articles in a month

Stay informed with unlimited access to Boston’s trusted news source.

  • High-quality journalism from the region’s largest newsroom
  • Convenient access across all of your devices
  • Today’s Headlines daily newsletter
  • Subscriber-only access to exclusive offers, events, contests, eBooks, and more
  • Less than 25¢ a week