Your Acura key has an electronic chip in it that is recognized by your car, and your Acura remote, of course, sends a signal that is unique to your car. These features keep your car safe from theft. However, if you need an Acura replacement key, you cannot have one made at the local hardware store. Acura replacement remotes and keys must be purchased from the manufacturer or from an online resource who specializes in reprogramming and selling necessary items for Acura keyless entry. An Acura chip key can only be purchased from one of these vendors or from Acura.