What you need when programming car keys?

Auto key matching is very familiar to people owning cars, for they may have experienced in prepare a car key. However, they may have not so such idea on what needs when programming car keys on their own.
Two situations could be taken into consideration. One is you are owning car keys, and the other is that you lost all keys. Actually, both situations need a tool, and that is auto key programmer.
Drivers with car key:
In this way, drivers just buy an auto key programmer, and a blank key, just copying old car key data to new bland key. That is all.
Losing keys:
In this case, there is higher requirement on car key programmer which should have the function of match key when drivers lose all keys. Here take SBB key programmer for example. First step is to connect sbb 16 pin cables to vehicle OBD II port, the programmer could copy pin code from vehicle IMMO dump/EEPROM of the car. And next is to write the key data to bland key. Finally plug key to the vehicle key hole and turn on ignition.

Of course, different vehicles models have the different car key matching methods, especially to BMW and Benz. During its programming, it cannot be just for copying and writing. BMW IMMO system is EWS and CAS. Old BMW is equipped with EWS, and ak90 is a classic programmer; and as to CAS system, bmw ak300 is a good option. Benz key making cannot do in the way of key to key or just match via obd2 port, and their professional tools are like ak500 series and so on.
Apart from specific car key programmers for specific car brand, here I am listing you several comprehensive key makers, including we mentioned above SBB, and others such as ad900, t300, MVP, M8, Zed bull and so on. You could access to detailed information about them online searching, and here I am recommending you to have a link to chinasinoy.net.
Besides, when select blank key, vehicle brand, key shape, frequency (MHZ), how many buttons and key chip ID and compatible car key programmer should be taken into consideration.