OUT OF CHARACTER:
This machine is called a “Force Detector” used by Emperor Palpatine’s Jedi Hunters to find Force Users.
There are several instances in the movies and SWEU that there are machines, crystals and organisms that detect Force Users.
In the movies, it was through direct blood measurement of MidiChlorians by Jedi. There was a certain level of of MidiChlorians needed to be accepted into the Jedi ranks. Anakin Skywalker had exceeded that amount.
The book “Outbound Flight” by Timothy Zahn measures MidiChlorians. In the novella, “Practical Man” by Karen Traviss detects them by HUD helmet detection in Boba Fett’s helmet. In the New Jedi Order series, the Yuuzhan Vong create Voxyn to sniff out Force Users.
The SWEU creatures: Vornskrs and Ysalamir detect Force Users. Shards, Thaissen and Kaiburr crystals detect Force Users.
It would be plausible if some Mandalorians co-opted these technological capabilities in their helmet and armor customizations and modifications. Mandalorians have been known to take technology and weaponize them.
In the new Star Wars Rebels television show, the lead character Sabine Wren ( sabinemando77) is known to create a weapon from the most nebulous of items.
Another old article from RP partner and member:
Might I add something about the Chiss: