If you own a newer car, you may be wondering what that little button on your door handle is for. Here's what it is and why ...

Keyless ignition was initially only available on luxury cars starting in the late 1990s, but it has become increasingly common. From 2008 to 2018, it became a standard feature on 62% of cars sold ...

Most modern systems also include keyless entry, allowing you to enter the car without inserting a key or hitting a button on the fob. The newest systems take entry and ignition a step further.

Edmunds reports on the evolution and operation of keyless ignition systems, from only being available on luxury cars in the 1990s to becoming a standard feature on most cars today.