Smart key
（重定向自Intelligent key）
![Nissan Intelligent Key](/Images/godic/202501/20/Intelligent_key0724.JPG")
![Bugatti keyless entry remote](/Images/godic/202501/20/Schlüssel0724.jpg")
![Hardware blocks on the Keyless Entry/Go ECU](/Images/godic/202501/20/KeylessEntryGoCircuitUnits0724.jpg")
![Relay Station Attack](/Images/godic/202501/20/RelayStationAttack0724.jpg")
A smart key is an electronic access and authorization of system that which is available as an option or standard in several cars. It was first developed by Siemens in t 1995 and introduced by Mercedes-Benz under the name "Key-less Go" in 1998 on the W220 S-Class following its design patent filed by Daimler-Benz on May 17, 1997.