"Mr. Krol, please run a dermal scan on this." Cortez instructed handing him the device "See if you can match it to Mr. Vreekal here"
Krol unholstered his dermal scanner and ran it over the machine. It was a simple process, really - you simply take a scan of a residual substance, such as dead skin, and then take a sample of any kind of DNA. Usually live skin.
"Mr Vreekal, if you could possibly lend me your hand, please..." Vreekal did so. A slight, sudden hiss and a pained expression from Vreekal later, and Krol had a match. He started giggling, to concerned looks from his superior officer. After a while, he was laughing so hard he couldn't breathe. When he finally got his breath back, he turned to his commander and announced, "He... he didn't even wear gloves! Ha ha ha!"
Why did nobody ever think of that? Krol had gotten away with so many hacking jobs in his youth because there were no fingerprints on the keyboard. That, and he always kept a magnet to hand. He turned to Vreekal's enraged face, and became solemn long enough to advise, "Next time, sir, I'd advise you to actually try to disguise a blatant use of contextually sensitive technology. For example, handling a biogel inducer on a ship that's just been infected with a biogel-based virus."
Krol presented his scanner and the inducer to Cortez, giggling slightly. "W-will that be all sir?" he stammered through his half-suppressed laughter.