I need Digital Mdf project

[wtrk]

Hey all.
Some of my friends have a project works with brass rod.
There are 12 type of selection unit ( gold,silver,metal, hole or void etc. )
2 brass rods putting inside the ground and people take another L brass pod , walking around this device.

I think some signals are sending and receiving between L pods and device pods.
Can anyone see or done this kind of Mdf