Originally Posted by TIMP
Can you hold onto them for use on your next trip like you can with the Singapore MRT cards? Oysters were just been introduced when I lived in London 3 years ago... I still have a bus carnet from last time I was there (wonder if its still can be used?)
I hang onto mine... of course I'm over about once a month. I have no idea how long they'd be good for if left completely idle... my guess would be indefinate, but... <shrug>.