Either go back to Tan Chong or check on Soxxi (http://www.autokey.sg/). Will cost quite a bit to duplicate Latio's key..
i happen to make the same inquiry early this week...
from TC, intelligent key set (with manual key inside) can only be made at TC Lok Yang... costs around $285++, manual key (with microchip inside for immobiliser) alone costs around $185++, programming included.
from a Soxxi station located at Marine Parade food centre, intelligent key set (with manual key inside) costs $300, more expensive than TC so didn't bother to ask about manual key

was told if car has TC alarm, gotta get the whole i-key set coz alarm will go off if we use the key to start engin
