SMS OTP/TAC is currently only available as a fallback option for customers without the Clicks App or for FPX transactions, it added. The bank said it will fully cease the alternative option of using SMS OTP/TAC and mandate only SecureTAC authorisation by the first half of 2023. CIMB urged all customers who have yet to do so, to download the CIMB Clicks App and to turn on notifications as this will be required in order for them to be able to continue enjoying digital banking services in a secure manner. CIMB added that it is also accelerating the implementation of measures to limit customers to one secure mobile device for the authentication of online banking transactions, with a targeted rollout by end-October. In line with the single secure mobile device restriction, the bank said it will introduce an added control measure in the form of a customer verification callback process for all new online banking registration and new secure device activation to protect customers against financial scams.