Hi,you have a car key programmer who can program a computer key of the car, but without the original key that was lost, for exampleAUDI, BMW, MERCEDES BENZ, PORSCHE, etc.I found a company that has a device that does the following things:This new special device for car key and transponder programming for CAS module was developed to work via OBD II and also you can preprogram on site keys or transponders with the device as the device consists of a key programmer and Hi Tag programmer. With this new Device when you program the keys via OBD II, the existing/old keys will not be erased and you will be able to use them again. The Device is powered up from the OBD II connector of the car. The Device is very usefull for Auto Locksmiths, auto engineers and special police agencies!Thank you very much and i waiting your quick answer. Show More