Upvote:1
I would suggest contacting the Oyster Card helpline for those queries. They have better access to the Oystercard system than station staff. Plus they will have heard of many more strange enquires like this. The number is currently 0343 222 1234 : http://www.tfl.gov.uk/contact/4417.aspx#page-link-oyster-and-contactless-payment-enquiries
Upvote:4