Fiquett has a custom PHP script that runs on his home server. Some custom plugins are used to augment Siri so it can recognize and respond in specific ways to specific commands. When one of those is sensed, it sends the command to the home server, which in turn spits it out to be recognized by the Viper. At first, Siri would only recognize some terse commands, specifically worded, like "vehicle start," "vehicle disarm," and "vehicle pop trunk." Now, though, it responds to more conversationally-worded instructions--Siri's real strength--like "start my car" and "pop my trunk."