No Faraday cage - mysterious punishment.

 The man refused to be vaccinated, to wear a mask, to paint the car black, to get a Faraday cage around his laptop!

Here's an access door to a Ukrainian command SANTAKLAUZ facility

 You can see it only here - feast your eyes.

The secret SALT box.

 Is this a salt box at a railroad station?

No. It is the Secure Access Linotype Transmitter. 

If you have the key, you would be able to use it!