Disc parking which can make a one-hour parking zone as short as thirty minutes, possibly resulting in an unjustified parking ticket. On March 31, 1979 the conference of ministers of transportation in the European Union decided that a European standard should only use designs with a single clock face. The standardized clock disc was introduced as federal law in Germany in November 1981, and similar designs were adopted in other European countries. From 1998 the old parking disc designs began to be abolished. France set the last date to 2007, while in Switzerland (not an EU member) the EU parking disc design
Parking lot a timer, so users can get back to a parking meter before it expires, and a filter that lets users choose between on-street and off-street parking spaces; it also connects to the phone's camera so a user can take a photograph of their car. Other lots operate on a pay and display system, where a ticket is purchased from a ticket machine and then placed on the dashboard of the car. Parking enforcement officers patrol the lot to ensure compliance with the requirement. Similar to this is the system where the parking is paid by the mobile phone by sending