code: func (s *Session) verifyPin(pin []byte) error {
  	if _, err := s.Channel.transmitEncrypted(claSCWallet, insVerifyPin, 0, 0, pin); err != nil {
  		return err
  	}
  	s.verified = true
  	return nil
  }
docs: // verifyPin unlocks a wallet with the provided pin.