I take transit to get around Vancouver, and here we have an HDID card called the Compass card for our transit passes. They have a similar tap on/tap out system in Brisbane and Auckland, except the only place you need to tap out of here is the SkyTrain.
Anyway, in the past week I have lost my loaded compass card twice! Thankfully my card was registered so I just needed to get a new card and have the balance transferred to it. Easy!!!