The Washington Post published a long feature on Monday about a 65-year-old man whose murder remains the only unsolved killing in Montgomery County, Maryland. Police working on the case have noted a lack of evidence they are now used to relying on: the digital footprint created by our text messages, e-mails, and social media accounts. Often times, this type of evidence can present a different and sometimes more detailed perspective on a victim.

The man in question, Philip Welsh, was beaten to death in his own home in February. The police suspect it was not a random crime, but they're lacking in leads. Welsh led a staunchly technologically ascetic life, with no computer or cell phone to his name. His technology included an answering machine, a Smith-Corona typewriter, and a CRT TV with built-in VCR and DVD players, according to The Post.

While violent crimes don't always turn on digital evidence, Captain Marcus Jones, commander of Montgomery County's major crimes division, told the paper that "those records usually help." It's often younger suspects and victims who let their conflicts play out so plainly through digital means, like a 16-year-old girl who literally stabbed her friend in the back after a Facebook argument or one 22-year-old man who posted cryptic status updates moments before murdering his baby daughter. It's not just millennials who do this though: a 31-year-old man posted photos of his murdered wife on Facebook, and text messages were featured in the Pistorius and Trayvon Martin murder trials.

Welsh's body was discovered the morning after he was killed, and police note that they are lacking leads not only in digital evidence, but in physical or anecdotal evidence as well. The investigation remains ongoing.