In everyday usage Japanese people speak of はんこ hanko, meaning the signature stamp. The more formal word for はんこ hanko is 印鑑 いんかん inkan. When you wish to reside more permanently in Japan, one needs to be registered with the local City Council. You would need to take your identification papers etc. together with your はんこ; this is called hanko registration, or 印鑑証明 いんかんしょうめい inkan-shōmei.
みとめいん mitome-in seal display case
Some company is doing souvenir business.
Lami Japan 