Detective from the Future

"The future police badge has been bound. Officer number 577533."
A voice echoed in Han Bin's mind as he toyed with the badge in his hand. This badge, which he'd acquired by chance two days prior, was narrower and more refined than the usual ones.
"What is going on?" Han Bin wondered aloud.
"The future police badge was developed in 2170. It is a new type of police auxiliary tool, capable of infusing knowledge through brainwaves for rapid skill acquisition," the badge prompted in his mind.
"2170? That's a hundred and fifty years from now! How did it come back to the present?" Han Bin exclaimed.
"A laboratory mishap allowed the badge to traverse parallel dimensions," the badge explained.
Han Bin found it unbelievable, but the prompts in his mind felt undeniably real.
"Officer number 577533, you have received a welcome package," the badge announced.
Skill: Footprint Identification
Level: Advanced
Function: Can track suspects and determine their physical features based on footprints, sock prints, shoe prints, etc.
A buzzing filled Han Bin's mind as a torrent of knowledge and data flooded in, like being struck by enlightenment.
He felt as if ages had passed, yet when he came to himself again, he was still in the office of the third criminal investigation team.
Everything in the office was exactly as before, as if only a moment had slipped by, but his mind now brimmed with expertise in footprint identification.
Han Bin knew about