You can go to any HKT/1O1O/csl. shops to activate Tap & Go by showing your valid identity card (Hong Kong or Macau) or passport (Macau or the PRC) or Exit-entry Permit for Travelling to and from Hong Kong and Macau.
Customers using 1O1O or csl. monthly services plan can get a Tap & Go SIM Card which supports Tap & Go free of charge . Customers using other mobile services providers can also activate Tap & Go without any charge.