In a lay man language a transponder key is a device that works with radio frequency to function. The starts of these were at the times of World War 2 for the aviation purpose but now they are mostly used for the automobiles. The transponder key emits the radio frequency for the supposed device to receive signals and to perform the action desired by the driver either to lock –unlock the car or starting of the ignition.
A transponder has a programmed microchip inserted in its device or key to send the electronically signals for the system in the car. If your vehicle uses the transporter key system make sure you get the at least one spare key with it, in case of emergency or when needed. These are hard to mend for the locksmith.
Lock or transponder key is damaged then depending upon the model of your vehicle you can program and set the new blank transponder key .it may take 40-45 minutes for new key to set and work. There are two basic types of transponder available, Electric Coupled Transponder System is used for the small areas to transmit signals and messages .
It requires the huge amount of electricity to run constantly. The second transponder is Magnetic Coupled System mostly used in automobile; they do not need a constant energy source to run they operate through radio frequency in the limited range of magnetic field. The key identification process is same for the all automotive transponder system. The key inserted into the ignition sends out electrical signals for the functioning of the key.