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.
TOWER FCU. Routing Number is a nine-digit numeric code printed on the bottom of checks that is used to facilitate the electronic routing of funds (ACH transfer) from one bank account to another. Itâs also referred to as RTN, Routing Transit Number or Bank Routing Number.