Authentication has become an essential part of our everyday lives which is used at almost every place from banks to experimental labs, from car automation to home automation. This authentication is generally provided through systems like passwords, PIN codes, card readers. At some places biometrics like fingerprint and retina scans are used. All designed with one purpose; to confirm a person's identity. Brain wave based authentication is another addition to the wide range of authentication systems, which has many advantages over other authentication systems. With a standard password someone can watch or 'shoulder-surf' what others type, but no one ca n watch thoughts. Cards and keys can be lost, but the brain wave is always present. Differently abled persons can't use systems which uses fingerprints or retina scans but they can use system using brain-waves. This clears that using brain waves as biometric to provide authentication is very beneficial. A system is designed and implemented which allows user to set a pattern of brain waves which must be provided as an unlock pattern to get the access. This pattern can be any combination of eye blink, attention and various brain rhythms like Alpha, Beta, Theta and Delta. The system described in this paper provides two-level authentication. First level of which is brain waves. Once the correct pattern of brain signal is provide the system will ask for a pass key as a second level of authentication. This paper describes the design and implementation of the system. © 2016 IEEE.