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Key Programming and Data Transfer The purpose of key programming is to make a new car key to work. This procedure is usually performed by a locksmith or the dealer. To program the new key, simply insert it in the ignition and switch the key to the "On" position, without starting the car. This should be repeated a specified number of times within a short period of time. Key blanks The key blank is a basic element of the lock that is used to cut the new key. The key blank is made of nickel-silver or brass and comes with a variety