"This is a modified dental scanner," she said. "Precision within five microns. It doesn’t just see the surface; it feels the density."

Back in his apartment, Elias plugged the device into his laptop, his heart hammering. The rendering progress bar crawled: 10%... 40%... 90%.

The kid didn’t look up from his phone. "Aisle four. All-in-ones. Print, copy, scan. Comes with a starter ink cartridge that’ll last you about three minutes."

"Where can I buy a scanner?" Elias asked the teenager behind the counter at Mega-Byte Electronics .

Elias didn’t need a scanner to digitize tax returns or old family photos. He needed one because he was convinced his neighbor, a retired clockmaker named Mr. Aris, was actually a high-functioning automaton, and he needed a high-resolution 3D scan of the man’s "skin" to prove it.

The kid finally looked up, eyes narrowing. "You want a handheld 3D LiDAR unit? That’s not aisle four. That’s more of a 'special order and sign a waiver' kind of thing."

Elias ended up at a dusty hobbyist shop on the edge of town called The Looking Glass . The owner, a woman whose gray hair was held back by a pair of soldering goggles, didn't ask what he was scanning. She simply pulled a heavy, metallic device from a velvet-lined case.

"No," Elias whispered, leaning over the glass case of smartwatches. "I need something… industrial. Something that can capture the subsurface scattering of synthetic polymers. Something portable."