Security of internet is becoming one of the latest important concerns along with extensive application of the Internet. OTP is the first security medium for strengthening the stability of electronic financial transactions. In this paper, we propose the method of one-time password key generation of OTP using changed location and angle of fingerprint features and new OTP system. Fingerprint is one of the powerful personal authentication factors, and it can create variable password key for one-time use of information of fingerprint features. And we performed a simulation for proposed random password key generation method and efficiency analysis.