Forgetting to tag off with a travel pass Snapper customers using Metlink travel passes will not be charged a penalty fare when using their travel pass on the bus services and within the zone(s) in which it is valid. Travel passes are loaded onto a standard Snapper. If you have an active travel pass but also want to travel on other services that the travel pass doesn’t cover (e.g. Airport Flyer for the GO Wellington pass), you’ll need to tag on and tag off, and the correct fare will be deducted from the money on your Snapper. Tagging on and off every Snapper service is the best way to make sure you get charged the correct fare for your travel, regardless of which Snapper product you’ve bought that month.