Members can reserve vehicles with Zipcar's mobile app, online, or in some places by phone at any time, either immediately or up to a year in advance. Zipcar members have automated access to the cars using an access card which unlocks the door; the keys are already located inside. Alternatively, members can use Zipcar's Android or iPhone app to locate a Zipcar by honking its horn as well as to unlock the doors. Zipcar charges a one-time application fee, an annual fee, and a reservation charge. Fuel, parking, insurance, and maintenance are included in the price.