but if it has some level of transaction log trail (however asynchronous)
"All transactions are settled between the card and reader alone. Readers transmit the transactions to the back office in batches but there is no need for this to be done in real time." - http://en.wikipedia.org/wiki/Oyster_card
People here are saying "I think/guess/assume that oyster cards work like... ". Without even checking with Wikipedia.
I'd like to hear about the Oyster card system's strengths and weaknesses from someone who really knows the system.
"All transactions are settled between the card and reader alone. Readers transmit the transactions to the back office in batches but there is no need for this to be done in real time." - http://en.wikipedia.org/wiki/Oyster_card
People here are saying "I think/guess/assume that oyster cards work like... ". Without even checking with Wikipedia. I'd like to hear about the Oyster card system's strengths and weaknesses from someone who really knows the system.