A system of one or more computers can be configured to perform particular operations or actions by virtue of having software, firmware, hardware, or a combination of them installed on a user device that includes a processor and a memory, the memory storing instructions executable by the processor such that the device is programmed to: send a trigger configuration file to a vehicle computer in a vehicle; receive an indication of a trigger from the vehicle computer; receive an input from a wearable device; and execute a task, based on the input and the trigger. Other embodiments of this aspect include corresponding computer systems, apparatus, and computer programs recorded on one or more computer storage devices, each configured to perform the actions of the methods.