I am surprised at how many people’s signatures evolve over time. They have passports which are current for 10 years and during this time their signature changes. It might become abbreviated, or even shortened to remove a middle name. Their current credit cards reflects the new way of signing. If this is the case make sure you have at least one form of photo identification with the “new improved” signature. The notary can always ask you to sign for him or her using the old signature (to prove it was you) but sometimes without practice these old signatures can be hard to replicate. The notary will determine overall that you are the person you identify yourself to be but having a consistent signature helps.