Paying at a Heathrow Short Stay Car Park is designed to be a ticketless and seamless process, primarily utilizing Automatic Number Plate Recognition (ANPR) technology. When you enter the car park, a camera records your number plate and the barrier opens automatically. You do not need to pull a physical ticket. Before returning to your vehicle, you must head to one of the many pay stations located within the terminal or near the car park pedestrian entrances. At the machine, you simply type in your vehicle registration number, and the system calculates the fee based on your length of stay. You can pay using contactless cards, mobile wallets like Apple Pay and Google Pay, or traditional credit and debit cards. Once the payment is processed, you have a set window of time to drive to the exit, where the camera will recognize your plate again and raise the barrier. Additionally, for those who prefer planning ahead, you can pre-book your stay online via the official Heathrow website, which often results in lower rates and allows for automatic entry and exit without visiting a machine.