Bitcoin payments app Plutus provides tap and pay at contactless payment terminals, including Transport for London, using Ethereum smart contracts and a decentralised rewards scheme.
All bitcoin deposits are made prior to the point of sale to avoid the waiting time required for confirmations. A deposit is converted to a virtual debit card on the app, registered on an exchange platform (PlutusDEX) running on the Ethereum blockchain.
http://www.ibtimes.co.uk/plutus-combines-bitcoin-ethereum-push-contactless-payments-1542463
