RSA is the company, the RSA algorithm isn't involved in this product. It actually uses a TOTP [1], a variant of HOTP. Here's the famous Blizzard authenticator

RSA is the company, the RSA algorithm isn't involved in this product. It actually uses a TOTP [1], a variant of HOTP. Here's the famous Blizzard authenticator in the manufacturer's original branding [2], from a competitor. There are others like this. [1] https://en.wikipedia.org/wiki/Time-based_One-time_Password_Algorithm https://en.wikipedia.org/wiki/Time-based_One-time_Password_A... [2] https://www.vasco.com/products/two-factor-authenticators/hardware/one-button/ https://www.vasco.com/products/two-factor-authenticators/har...