The Landrush Period is the period when, during the introduction of a new TLD, registration becomes open to the public. The period, which follows the Sunrise Period, is usually a fairly short window, during which applications may be submitted for registration. The process for application approval differs by registry, often depending on the expected number of customers. Some process applications on a first come, first served basis, while others use a "round robin" technique, the downside of which is that registrars may take advantage of the system by creating ICANN-accredited shell companies to afford them more turns for each round robin round. A new technique, called the "collision auction," is for the registry to take all competing applications from the registrars and send them to a closed auction, in which the winner would be awarded the domain name.