Needing a fax machine was something from 1998-2005 ish. The USA and Europe had switched to email. Japan was behind. If you want examples, unless something has

Needing a fax machine was something from 1998-2005 ish. The USA and Europe had switched to email. Japan was behind. If you want examples, unless something has changed, if you run a business (for example consulting) and you make a new contract, you must register the contract with the tax office in person. The Japanese government apparently made moves to fix this type of "must be done in person" stuff because of covid. I haven't registered a contract since 2019.