public static void Open(UIElement focused_)
        {
            string text = "";
            TouchScreenKeyboardType keyboardType = TouchScreenKeyboardType.Default;
            bool multiline = false;
            bool secure = false;
            int characterLimit = 0;

            if (focused_ is FrameworkElement)
            {
                switch (((FrameworkElement)focused_).InputScope)
                {
                    case InputScope.Url:
                        keyboardType = TouchScreenKeyboardType.URL;
                        break;
                    case InputScope.Digits:
                    case InputScope.Number:
                    case InputScope.NumberFullWidth:
                        keyboardType = TouchScreenKeyboardType.NumbersAndPunctuation;
                        break;
                    case InputScope.TelephoneNumber:
                    case InputScope.TelephoneLocalNumber:
                        keyboardType = TouchScreenKeyboardType.PhonePad;
                        break;
                    case InputScope.AlphanumericFullWidth:
                    case InputScope.AlphanumericHalfWidth:
                        keyboardType = TouchScreenKeyboardType.NamePhonePad;
                        break;
                    case InputScope.EmailSmtpAddress:
                        keyboardType = TouchScreenKeyboardType.EmailAddress;
                        break;
                    case InputScope.RegularExpression:
                        keyboardType = TouchScreenKeyboardType.Search;
                        break;
                    default:
                        keyboardType = TouchScreenKeyboardType.Default;
                        break;
                }
            }

            TextBox textBox = focused_ as TextBox;
            PasswordBox passwordBox = focused_ as PasswordBox;

            if (textBox != null)
            {
                text = textBox.Text;
                multiline = textBox.TextWrapping == TextWrapping.Wrap && textBox.AcceptsReturn;
                characterLimit = textBox.MaxLength;
            }
            else if (passwordBox != null)
            {
                text = passwordBox.Password;
                secure = true;
            }

            TouchScreenKeyboard keyboard_;

          #if UNITY_2018_1_OR_NEWER
            keyboard_ = TouchScreenKeyboard.Open(text, keyboardType, true, multiline, secure, false, "", characterLimit);
          #else
            keyboard_ = TouchScreenKeyboard.Open(text, keyboardType, true, multiline, secure, false, "");
          #endif

            if (keyboard_.status == TouchScreenKeyboard.Status.Visible)
            {
                if (textBox != null)
                {
                    textBox.HideCaret();
                }
                else if (passwordBox != null)
                {
                    passwordBox.HideCaret();
                }

                keyboard = keyboard_;
                focused = focused_;
                undoString = text;
            }
        }