The primary record for the window registrars is either a networked laptop or a list. Since at-track networks are problematic, the list is shown here. This formatted record is created from the system "check-in" file just before registration opens (so that payments and changes entered by any assistants are included). In fact, payments received by mail can be entered throughout the weekend and the information will be available for the at track registrar to use.
At the window, the registration worker locates the drivers name on this list and confirms the preregistered status. Payment due is collected and the method of payment recorded on the appropriate line. Credit card info can be written in and processed back at the office if no electronic methods are available at track. (A CC payment has been obscured on this example).
An "aside": Collections are a "one way" task at the track. Payments received "at the office" remain there. Refunds, check swapping, and other accounting issues are more efficiently handled in the office after the event. (Ever try swapping a previous check at WalMart?) Adopting that standard business model saves quite a bit of time at the track.
There are columns on this list where the preregistered "event" (SAR, Reg, Natl, Test, etc) is printed so that the appropriate car decals to be issued can be identified.
Entrants are treated similarly (located to the right of the driver info). The check mark or X by the name shows that the person has checked in at track.

The driver and entrant are treated exactly the same for signatures. Each signs two forms: the event compliance form (on the left of this picture) and the liability waiver form (on the right). Once a page has been filled, it can be moved to the next section in the folder so that the sequential nature of the pages is preserved.

The compliance form includes the class and car number. The purpose is to make it easier to locate a signature later. Note that the compliance form is actually the chronological list for the signatures. That fact is useful to locate the signature on the waiver form when it is needed.

Once the payment has been received and recorded (write class & car number on checks), the appropriate decals and tickets are issued. Tickets will include a single car Tech "admission" ticket and the appropriate number of crew tickets.