Electronic signing
Beside
Inkan
it is possible to do electronic signing
(or: e-sign, esign)
in Japan:
https://www.docusign.com/how-it-works/legality/global/japan
Japanese legal information
by law.co.jp
and
meti
There are a few electronic-official-document servies available in Japan:
docusign
You can also go one step further, and do all your contracts with HTML-templating in one tool:
Concord
#knowledge
#legal