Yubico - HW Security key for Multi-Factor Authentication (YubiKey 5 for Desktop & Mobile, YubiHSM 2)

https://www.yubico.com/

The company’s core invention, the YubiKey, is a small USB and NFC security key securing access to any number of IT systems and online services. To protect secrets on servers, we also created the YubiHSM, the world’s smallest hardware security module. For easy integration with any IT system, we offer developers open source servers, support and hosted validation services.