Question: can kwikset locks be rekeyed to any key?
Answer: A Kwikset SmartKey tool (One should've came with your lock, but if not, you can buy one on Amazon). The new (or rather, old) key that you want to use instead. This must be a Kwikset key, as Kwikset and Schlage keys are totally different from one another (and won't work in each other's locks).