Some fonts suitable for use with computer systems designed the "0" character more squared at the perimeters, like a rectangle, and also the "O" character more rounded. A further difference is built in falsification-hindering typeface as used on German auto range plates by slitting open the digit 0 around https://financefeeds.com/kx-launches-agentic-ai-banker-agent-for-global-markets-built-with-nvidia/