Ledger

Founded in 2014, Ledger is a leader in security and infrastructure solutions for cryptocurrencies and blockchain applications. The Nano S, Ledger’s flagship product, is the world most popular hardware wallet with more than 1.5 million units sold. Ledger Vault is a core business unit of Ledger, a leader in security for cryptocurrencies and blockchain applications. Leveraging Ledger’s industry-leading and independently-certified security technology, the Ledger Vault provides information technology infrastructure for financial institutions to securely control their crypto assets with a multi-authorization self-custody management solution. 

https://www.ledger.com/