Some fonts suitable for use with computers produced the "0" character much more squared at the edges, like a rectangle, as well as "O" character far more rounded. A further difference is created in falsification-hindering typeface as used on German car range plates by slitting open the digit 0 https://financefeeds.com/asx-sells-stake-in-digital-asset-for-57-million-asic-launches-inquiry/