Is this the killer app smartwatches have been waiting for? Viper launched SmartStart – a mechanic-installed gadget that let you wirelessly start your car, open the trunk, and more – back in 2009.

Smartwatch owners with a Viper SmartStart system in their cars are getting some extra utility and convenience in their wrist-mounted wearables. Viper has just introduced its SmartStart 4.0 app for iOS ...