With ComfoAccess®, the development teams of Trapeze and Albis Technologies are launching a new ticketing system. This trend-setting system is based on presence detection technology. After the EasyR!de ticketing system in Switzerland and ALLFA-Ticket for the German city of Dresden, the two companies are presenting a system that is mature for the market named ComfoAccess®. Passengers carrying a ComfoAccess® card with them are automatically registered in the vehicles they board without having to do anything. This eliminates the need for buying a ticket or knowing the fare. The right to use the relevant public transport service is checked by the public transport authority through the ISO14443 interface of the ComfoAccess® card. The data privacy requirements arising from the above implementations are also taken into account.