eSecuOTPToken by ExcelSecu consists of highly secure One-Time Password devices. It supports OATH compliant TOTP and OCRA algorithms, enabling easy integration with OATH authentication systems. With the programmable feature (eSecuOTP-1A and eSecuOTP-5L support it, eSecuOTP-6 does not), it can be reseeded an unlimited number of times using a special app, allowing users to switch the network account needing login protection. eSecuOTPToken can be used for OTP authentication for Internet banking, access control, ID authentication, e-finance, e-commerce, etc. It supports time-based (eSecuOTP-1A, eSecuOTP-5L, and eSecuOTP-6) and challenge-response (eSecuOTP-6) authentication. It offers physical protection (Water/Tamper/Dust proof), is portable and easy to use, and includes hardware PIN protection (eSecuOTP-5L and eSecuOTP-6).