I returned to the Circuit this morning to find even colder temperatures than on Friday. It was 45 degrees when we first arrived and will be just 62 degrees when qualifying starts at Noon -- by far the coldest race of the season.

Media credentials have always fascinated me. They come in so many different shapes and colors. And when it comes to motorsports, they make colorful reminders of where I've been. So when I started posting pictures of them on Twitter, my friends and followers were really receptive -- they wanted to see more.

So I've received a lot of questions about the F1 lanyards and media passes and how they looked more expensive than many of the others I’ve received this season.

That's because, like most things in Formula 1, these passes are pretty advanced. There's a computer chip embedded in every pass that must be swiped and scanned at the entrance each time you leave or return to the track.

In other words, there's no sneaking into the venue like the old-timers used to do to at classic NASCAR races such as Bristol or Martinsville.

Additionally, there's a pass for every form of access. The three I've used this weekend and those photographed below are the media, paddock and paddock club passe. There’s also a different set of credentials for every day of the weekend.