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The Oyster card balance is certainly maintained online in real-time (or near to real-time) since you can view it in the Oyster card app/website. But yes, for s
by Reason077 2y ago
The Oyster card balance is certainly maintained online in real-time (or near to real-time) since you can view it in the Oyster card app/website.
But yes, for speed/redundancy they are still probably using the stored value balance too.
- lxgr 2y agoIt's most likely near real time. TfL likely need that mechanism primarily to synchronize the list of blocked open-loop bank cards with unpaid balances to all readers. Faster Oyster transaction list updates and any-station remote top-ups are probably just a side effect of that. Clipper doesn't (yet) support open-loop bank cards yet, so for them, it's probably enough to update more remote readers every time the bus goes back to the depot, for example.