Matthew Kidder was convicted of the murder of Jessyka Nelson, thanks to the digital forensics squad."Just because something is deleted doesn't mean we can't recover it," said Nick Herfordt, a member of the Omaha Police Department's digital forensics squad. "We get inundated with requests and we really are only scratching the surface of what we can do."The OPD digital forensics squad found pages of text messages on Nelson's cellphone, giving detectives an unexpected lead to Kidder."We got her phone and at that point it was a big whodunit" Herfordt said. "So you get her device and see who she was talking to and you can see that there  was communication, or at least text messages, coming in the night before, and then that morning she was found."One text, sent on June 19, said, "On a scale of playful stabby to murdered in my sleep."A number of texts about bowling dates and opportunities to hang out went unanswered. Kidder texted Nelson on June 25, after he had killed her."With the amount of evidence that we had, I think it would've been just a matter of time," Herfordt said. "We hope we kind of expedited the arrest and got him off the streets sooner."Herfordt said cellphones track locations and habits. His team can recover almost anything, and often uses a criminal's own phone against him."Everyone has a cellphone on them. They're a part of almost every case in some capacity, so I can't see this going away," he said.Herfordt said part of the reason why cellphones track location so accurately is 911 calls. He said right now, the digital squad is a team of two, but may be growing soon.