In the UK when using London Transport / Tube and Bus system we ‘tap in’ and ‘tap out’ with our Oyster Card. In Auckland they have a ‘HOP’ card and you have to ‘tag on’ and ‘tag off’.

I couldn’t help wondering, as I contemplated the sign asking me to ‘tag off’ on the exit door of the bus, whether this might be an insult ( albeit a very polite one – it did say ‘please’)