What is smart key in car?

A smart key, also known as a proximity key, is a wireless access system for a vehicle that allows the driver to enter and start the car without physically using a key. Instead, the device communicates with the car via radio signals and proximity sensors, allowing the driver to simply touch or be in close proximity to the vehicle to activate the lock/unlock and ignition functions.

Smart keys typically have a range of about 15-20 feet and often incorporate features like remote start and keyless entry. Some advanced systems also allow for remote control of car functions like climate control and audio systems through a smartphone app.

The security of smart key systems is typically higher than traditional key locks, as the radio signal is encrypted and constantly changing, making it more difficult for would-be thieves to intercept or copy. However, some smart key systems have been known to be vulnerable to hacking or signal jamming.

Overall, smart key technology has become increasingly common in modern vehicles and is considered a convenient and secure alternative to traditional keys.