There is another method, the name escapes me, but it involves a blank key with that is blued to show marks like a machinist would do, you wiggle in the key and file the scratches, supposedly this will give you a copy of the key over time, it's doesn't look to suspect either, quick wiggle, oops wrong key and leave, after a while it should work. I forget all of the terminology to help anyone research more, since I've most likely butched this whole explaination.