diff --git a/src/tools/ssd.mjs b/src/tools/ssd.mjs
new file mode 100644
index 00000000..0b7fa8c9
--- /dev/null
+++ b/src/tools/ssd.mjs
@@ -0,0 +1,125 @@
+// Node.js script that implements an Appium client which will launch
+// Simply Sign Desktop app and log a user in. Once logged in it should
+// be possible to use tools like signtool.exe to sign Windows EXE/MSI files
+// with the Certum certificate.
+
+import { Key, remote } from 'webdriverio';
+import { exec } from 'child_process';
+import { TOTP } from 'totp-generator';
+
+async function screenshot(driver, filename) {
+  // uncomment to save .png screenshots
+  //await driver.saveScreenshot(filename);
+  return
+}
+
+function sleep(ms) {
+  return new Promise(resolve => setTimeout(resolve, ms));
+}
+
+async function executeCommand(command) {
+  try {
+    let { stdout, stderr } = await exec(command);
+    return stdout;
+  } catch (error) {
+    console.error(`Error executing command: ${command}`);
+    console.error(`Error details: ${error}`);
+    throw error; 
+  }
+}
+
+async function runSSD() {
+    const opts = {
+        port: 4723,
+        logLevel: "silent",
+        capabilities: {
+            platformName: "Windows",
+            "appium:app": "C:\\Program Files\\Certum\\SimplySign Desktop\\SimplySignDesktop.exe",
+            "appium:automationName": "Windows",
+        },
+    };
+
+    let driver;
+    try {
+        driver = await remote(opts);
+        
+        // Github Actions Win ARM64 is stuck on a OOB screen that steals focus
+        // These enter / escapes should dismiss it.
+        const runner_arch =  process.env.RUNNER_ARCH;
+        if ( runner_arch === "ARM64" ) {
+          console.log('Running on ARM64...');
+          await sleep(3000); // Pause execution for 3 seconds
+          await screenshot(driver, 'oob1.png');
+          await driver.sendKeys([Key.Enter]);
+          await sleep(3000); // Pause execution for 3 seconds
+          await screenshot(driver, 'oob2.png');
+          await driver.sendKeys([Key.Enter]);
+          await sleep(3000); // Pause execution for 3 seconds
+          await screenshot(driver, 'oob3.png');
+          await driver.sendKeys([Key.Escape]);
+          await screenshot(driver, 'oob6.png');
+        } else {
+          console.log('NOT running on ARM64');
+        }
+
+        //  Execute SSD again to open login dialog
+        exec('"C:\\Program Files\\Certum\\SimplySign Desktop\\SimplySignDesktop.exe"', (error, stdout, stderr) => {
+          if (error) {
+            console.error(`exec error: ${error}`);
+            return;
+          }
+        });
+        await sleep(3000);
+
+        // Login
+        const windows = await driver.getWindowHandles();
+        const login_window = windows[0]
+        await driver.switchWindow(login_window);
+        await screenshot(driver, 'login01.png');
+        const id_value = 'jay0lee@gmail.com';
+        const id_arr =  [...id_value];
+        await driver.sendKeys(id_arr);
+        await screenshot(driver, 'login02.png');
+        await driver.sendKeys([Key.Tab]);
+        // We wait until the last possible second to generate
+        // our TOTP to ensure it's still valid.
+        const token_value = TOTP.generate(process.env.TOTP_SECRET, {algorithm: 'SHA-256'}).otp;
+        const token_arr =  [...token_value];
+        await driver.sendKeys(token_arr);
+        await screenshot(driver, 'login03.png');
+        await driver.sendKeys([Key.Enter]);
+
+        // TODO: it's expected that on successful login the window
+        // will close and these screenshots will error out. Figure
+        // out how to handle that gracefully.
+        await screenshot(driver, 'login04.png');
+        await sleep(500);
+        await screenshot(driver, 'login05.png');
+        await sleep(500);
+        await screenshot(driver, 'login06.png');
+        await sleep(500);
+        await screenshot(driver, 'login07.png');
+        await sleep(500);
+        await screenshot(driver, 'login08.png');
+        await sleep(500);
+        await screenshot(driver, 'login09.png');
+        await sleep(500);
+        await screenshot(driver, 'login10.png');
+        await sleep(500);
+        await screenshot(driver, 'login11.png');
+        await sleep(500);
+        await screenshot(driver, 'login12.png');
+
+    } catch (error) {
+        console.error("Error during Appium run:", error.name);
+    }
+
+    // INTENTIONAL Keep driver open so tray icon for Certum doesn't close
+    // finally {
+    //    if (driver) {
+    //        await driver.deleteSession(); // Close the Appium session
+    //    }
+    //}
+}
+
+runSSD();