If you own a newer Honda model (from 2013 and up), you would most likely have access to something called HondaLink. This is a unique smartphone-based connectivity service that you can use to interconnect with your Honda car. All you need to do is download the app, and make sure that you have a HondaLink subscription active. Depending on how high or low you are on the subscription tier, you might have access to different services. For example, HondaLink allows you to remotely start up your Honda, or lock and unlock the doors from your phone. You could even activate the AC to pre-condition the interior. Higher-tier packages offer you extra features like getting notified if your car is being stolen, or even tracking its location from the app.