The concept itself is not new, with common law jurisdictions having recognized telegraph signatures as far back as the mid-19th century and faxed signatures since the 1980s. From Wikipedia
Crane Federal Credit Union Routing Number. 283977688 routing number is a 9-digit number designed and assigned to Crane Federal Credit Union by The American Bankers Association (ABA) to identify the financial institution upon which a payment was drawn.
AFCU Routing Number. The routing number, or ABA, for America First Credit Union is 324377516. This number may be used for a variety of services, including direct deposit, wire transfers, tax purposes, paying utilities & more. To set up an electronic funds transfer, the account number must contain a total of 12 digits. This includes your account number, the account suffix, and any necessary leading zeros.