Amtrak started offering electronic tickets on all train routes on 30 July 2012.[6] These tickets can be ordered over the internet and printed (as a PDF file), printed at a Quik-Trak kiosk, or at the ticket counter at the station. Electronic tickets can also be held in a smart phone and shown to the conductor using an app. Mobile tickets are common with operators of US commuter train networks (e.g. MTA LIRR and Metro North) but they are usually only offered on the US version of the App Store and only accept US-issued credit cards as the app's payment page asks the user for the credit card's ZIP code to complete the purchase.