The Main Objective Of This System Is To Propose A System, Which Is Used For ATM Security Applications. Here Bankers Will Collect The Customer Finger Prints And IRIS While Opening The Accounts Then Customer Can Access The ATM Machine. When The Customer Enters ATM No Need To Used Atm Cards At All, Just By Keeping The Finger Print Itself The Machine Can Identify The Account And Will Show The Details. Then The Customer Need To Enter The Pin Provided To Login. Then For Each Transaction Customer To Give Iris For Example For Cash Withdrawal, Balance Enquiry Etc. This Proposal Will Go A Long Way To Solve The Problem Of Account Safety. Use Of The ATM (Automatic Teller Machine) Which Provides Customers With The Convenient Banknote Trading Is Facing A New Challenge To Carry On The Valid Identity To The Customer. Since, In Conventional Identification Methods With ATM, Criminal Cases Are Increasing Making Financial Losses To Customers. We Design A Simple Fingerprint And Iris Recognition Based Identification System Using Microcontroller. The System Uses R305 Fingerprint Scanner To Capture Fingerprints With Its DSP Processor And Optical Sensor. This System Can Be Employed At Any Application With Enhanced Security Because Of The Uniqueness Of Fingerprints. It Is Convenient Due To Its Low Power Requirement And Portability.