+userId : int
+name : String
+phone : String
+voice : np.array
+face : image
+register()
+login()
+identity : String
+audio_db : String
+extractFeature()
+verifyUser()
+video_db : String
+addLabel()
+otpCode : int
+sendOTP()
+verifyOTP()
+showOptions()
+balance : int
+viewBalance()
+amount : float
+makeTransfer()
+logs : List
+getHistory()
+video : file
+interpretSign()
by shiv