From O! ePay
Top Up from O! ePay
With O! ePay, you can top up your Octopus cards to any value, anytime and anywhere via the Octopus App. Simply register your Octopus cards to the Octopus App and you can register a maximum of 20 Octopus cards.
Please note that this function is only applicable to 9-digit Octopus products (eight digits plus one bracketed digit). With an Android mobile device, you will need NFC (Near Field Communication) enabled. iOS users need to purchase an Octopus Mobile Reader to enjoy this function.