As far as I can tell, one large benefit for Oyster cards is that people can use the gates at tube stations faster than with paper tickets. This is quite impress

As far as I can tell, one large benefit for Oyster cards is that people can use the gates at tube stations faster than with paper tickets. This is quite impressive, given that an experienced commuter barely has to break stride to use a paper ticket. (And on buses, you don't have the delay of interacting with the bus driver - you beep on as you go past). I'm sure the cost savings for London Underground from increased speed beats that that they'll lose to forged Oyster cards.