Lightweight, parasitic services

Touch and travel is a German pilot scheme (one of many) that is testing NFC for ticketing on public transport. One of the partners in the trial Giesecke and Devrient describe it:

“With the new eTicketing System Touch&Travel from Deutsche Bahn (DB), the mobile phone serves as an electronic ticket on trains, buses, streetcars, subways, etc. The SIM cards inside the phones are provided by Giesecke & Devrient. The Touch&Travel project is initiated by Deutsche Bahn, the German railway, and the mobile operator Vodafone.”

This trial shows one of the ways that NFC changes the infrastructure required for a ticketing or payment service. In this case it is a lightweight, parasitic infrastructure that can fairly cheaply be added to other ticketing methods. The service relies on three elements:

• Passive NFC tags at stations that contain a unique identifier or geographic information for that location. In this case they are embedded inside what must be a cheap container of aluminium, a printed surface and glass. This doesn’t require power or a network connection, and serves the same function as a large, powered, and networked ticket machine.
• The mobile phone is the window into the service; it interprets the location/identification data, connects to the ‘cloud’ and provides an interface. This interface could show location, ticket prices, ticket options, time of journey, routes, transaction history, etc. Here there is the opportunity to create a service that offers more utility, value and experience than traditional ticketing.

• The mobile data network connects the user to the service, in many cases this data connection already exists, and doesn’t require infrastructural development. Of course here there are issues with underground metro systems that don’t offer mobile coverage.

  

  More details on the service/interaction design:

• By waving your NFC mobile handset over the so called Touchpoint before entering the train, located at the platforms, the system registers the beginning of a trip.
• The ticket is stored on the SIM card inside the mobile phone
• The conductor checks the ticket by scanning the phone with a portable reader.
• Having arrived at the destination, the handset is waved over the Touchpoint again. The system registers the end of your trip. The system processes the data and calculates the correct cost for the distance traveled.

• The passenger is billed once a month

  Of course the service requires that NFC handsets are easily available, or that the service is sold through SIM add-ons for existing mobiles (perhaps as an alternative to a contactless card like Oyster/Suica).

  I wonder how a service that relies so heavily on an ad-hoc infrastructure will be accountable to failure and who holds responsibility and the problem-solving ability for errors and misunderstandings?

  Thinking also about the parasitic; might multiple services compete with each other for approachable station space? In a de-regulated environment (I’m thinking of the UK here) who you touch might define what service you get…

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