This book came about due to many request fron locksmiths through out the U.S.A that are looking to get into this type of work.The methods presented here are not the only way to do this type of work but is the way i do it.The method presented here are not the only way to do this type of work but is the way i do it.The reader must remember that this is being done yb and presented by someone with many years of experience.Taking this into account when you start out,this is a slow process unlike learning about a new machine or piece of new software.It will take about 3+ months for you to reach a basic understanding how this type of work comes together.EEPROM work requires a great deal of patience and time.Taking many notes and pictures as you start will be great assistance to your later on.The methods i use as examples here are not the only way it can be done.It just gives you a basis of understanding the techniques as a way to start.When working with electronics on a vehicle a simple misstep can create an costly repair.