Use the Magnetic Decryptor on the top floor of the Arrival Building

How do you complete "Use the Magnetic Decryptor on the top floor of the Arrival Building"?

This is step 3 of 3 in Deciphering The Data, given by Shani. It is completed on The Spaceport. The exact location is marked on the The Spaceport map.

• Deciphering The Data
• The Spaceport

What are the other objectives in Deciphering The Data?

Deciphering The Data has 3 objectives in total: Use the Magnetic Decryptor in the Fuel Control Building, Reach the Arrival Building in Spaceport and Use the Magnetic Decryptor on the top floor of the Arrival Building.