Identity verification schemes for public transport ticketing with NFC phones

Public transport ticketing with mobile phones has in recent years become a possible reality as the standards for Near-Field Communications (NFC) are being taken up in mass transport ticketing, and the use of contactless smartcards for small value payments like ticketing is as well being deployed. We examine the feasibility of using mobile phone with a hardware Trusted Execution Environment for identity verification of transport ticketing with a perspective focusing on security and performance. We provide measurements based on an implementation in contemporary mobile phone hardware, and discuss our results by comparing with other proposed identity-verification ticketing solutions in light of the constraints set by usability and practical considerations as indicated by transport authorities.