I'm back from Belfast now, having used my three-day Belfast Visitor Pass on buses and trains. All the travel arrangements went well.
When you “touch in“ the Visitor Pass on the bus, you get a green light and beep indicating a successful read, and the machine prints a ticket which you must keep for inspection. I have one of these, which is marked “iLink Zone 1”. The exception is the “Glider” articulated bus, which has separate stops with a card reader and you must touch in on this before boarding, as there’s no ticket issue/checking on board - more like a tram.
At rail stations with ticket barriers, you tap your card on the gate, in and out, as you would in Britain. Grand Central, Lanyon Place and York Street stations have ticket gates. The small stations I used all had card validators on the platform. You get a green “tick” when you touch in successfully. There seemed to be no requirement to touch out.
One morning I travelled to Whitehead to visit the Railway Preservation Society of Ireland depot/museum. This is beyond the validity of the Visitor Pass, which, according to Translink publicity, ends at Jordanstown. I enquired at Grand Central ticket office and was told the conductor on the train would issue me with the Jordanstown - Whitehead ticket. I duly presented my pass on the train and asked for the extra ticket. The conductor just scanned my pass and handed it back to me. No further payment was requested, even after I double-checked that I was OK to travel to Whitehead. After my visit, on return to Whitehead station there was a staff member on the platform checking everyone. I handed him my pass, expecting him to query it, but he just handed it back and waved me through.
I’ve just checked on the Translink website and the Zone 1 boundary is definitely shown as Jordanstown. Whitehead is actually in Zone 3, so this is a bit of a puzzle. As I ordered the card on-line, perhaps I’ll get a bill!