Protectimus SHARK by Protectimus Ltd is a classic hardware TOTP token designed for two-factor authentication. It generates time-based one-time passwords (OTPs) following the TOTP OATH standard and supports the SHA-256 algorithm, providing enhanced security against brute force attacks. Protectimus SHARK is built for harsh conditions with robust construction, water resistance, and dustproof capabilities. It is drop-proof and can function submerged in water up to 1 meter. The device features an ergonomic design that fits conveniently on a keyring, making it a practical solution for two-factor authentication. Protectimus SHARK is compatible with any authentication system supporting OATH standards and can be used with Protectimus Cloud Service, On-Premise Platform, or any other 2FA service that supports SHA-256 TOTP tokens. The device operates offline, making it impervious to hacking and interception of one-time passwords. The battery lasts up to 3-5 years, and the device includes a battery charge indicator. Customization options are available for company logos and color choices, with additional lead time required for customization.