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.
Routing numbers depend on the type of transaction made such as reorder Crane Federal Credit Union checks, receive incoming domestic or international wire transfers, use the number for wire transfers to your Crane Federal Credit Union account, or to set up direct deposits.