What are they checking with the pen?

The magnet clicking confirms the part they are touching with the pen is original and not replaced

Its not a pen its a magnet, Body fillers are not magnetic. They are checking for body fillers which means repairs

Checking the body if it’s factory one or changed

It is called a filler detector. Basically to check if the car hasnt been filled before. The detector wont stick on any part that has been filled. In naija term, to check if the car is first body.

One person should just check and the them the result.. Imagine 10 doctors checking if u sick or not at the same time

My own is, what is that ladies face doing on the screen? 😑

To check the temperature and HBP of the car since it just came out of the container

Checking how many people have used the car before 😂

It’s not pen but magnet, checking to see if it has had body work done on it before, magnet sticks on pure metal but if it has been reworked the magnet would not stick.

It's magnets to check if parts for auto Body filler AKA Cuffin