private boolean allowedForFallback(String key){
  return KEY_UNLOCK_BACKUP_INFO.equals(key) || KEY_UNLOCK_SET_PATTERN.equals(key) || KEY_UNLOCK_SET_PIN.equals(key);
}

private boolean allowedForFallback ( String key ) { return KEY_UNLOCK_BACKUP_INFO . equals ( key ) || KEY_UNLOCK_SET_PATTERN . equals ( key ) || KEY_UNLOCK_SET_PIN . equals ( key ) ; }
check whether the key is allowed for fallback ( e . g . bio sensor ) . returns true if it ' s supported as a backup .
