Can i install an alarm/remote start with an existing factory kia keyless entry?

I am looking into buying a 2009 Kia Rio really soon. My only concern is would I be able to hook up an alarm and remote start to the current keyless entry equipment or would i have to remove that device and insert the new device into it. I read that some cars have the possibility to have alarms and remote starters connected to the current keyless entry but I havent found anything on the Rio or Kia.|||Yes, but the factory system will be disabled when the aftermarket one is instaled. The factory system will be working again, once the aftermarket is removed.