Notice: as of 1 October the new 3D version 2.0 (3Dv2.0) will start to be used by the banks. 3D is the security system often used when an online purchase is made. The present 3D system requires the buyer to respond to their bank with an OTP number which is sent to them by SMS. The new system will use artificial intelligence to reduce the times that the buyer will be sent an OTP number. OTP numbers will still be used but much less frequently.