Though a specialist in electronic notarization, he mourns the gradual disappearance of the physical signature, which he said is deliberate and easy to link to the person who made it.

WSJ: The New Script for Teaching Handwriting Is No Script at All

Beginning at the end, right before the notarization, there is a statement signed by Diana Weiss, the General Counsel of PWC certifying that the letter has been signed by the firm and is an authentic document prepared by the firm.

FORBES: Romney Accountant's Letter - Exercise In Obfuscation ?