So traveling about with my young daughter when I realize I left her octopus card at home. I also had no cash on me.
So I go to the customer service counter and try to purchase my daughter a one way ticket from Hung Hom to Tai Po and pay for it using my Octopus Card. No Go...the only way to purchase a train ticket is with cash
So I guess you can use an Octopus card to buy almost anything in this city except a train pass?
Why? They obviously have card readers at the customer service counter.
On a separate note I did notice a sign indicating a monthly train pass for the East rail line....I think it was $420. Never knew that existed.