diff --git a/README.md b/README.md
index 6676397..2191137 100644
--- a/README.md
+++ b/README.md
@@ -85,6 +85,7 @@ LeagueClientUx process. If you wish to await until a client is found, you can us
 | unsafe | `false` | If you do not wish to authenticate safely using a self-signed certificate you can authorize while ignoring any certificate rejections. To authenticate this way, set unsafe to `true`. The custom certificate option will take precedence over this, meaning this option is meaningless if a custom certificate is provided. |
 | useDeprecatedWmic | `false` | Use deprecated Windows WMIC command line over Get-CimInstance. Does nothing if the system is not running on Windows. |
 | windowsShell | `powershell` | Set the Windows shell to use. Either powershell or cmd. |
+| getProcessCommandLine | `undefined` | Set custom function to get LeagueClientUx process information. |
 
 ```js
 import { authenticate } from 'league-connect'
diff --git a/src/authentication.ts b/src/authentication.ts
index ba0c8db..427fe1e 100644
--- a/src/authentication.ts
+++ b/src/authentication.ts
@@ -78,6 +78,12 @@ export interface AuthenticationOptions {
    * Default: 'powershell'
    */
   windowsShell?: 'cmd' | 'powershell'
+  /**
+   * Set getProcessCommandLine custom function to get LeagueClientUx process information.
+   *
+   * Default: undefined
+   */
+  getProcessCommandLine?: (processName: string) => string
   /**
    * Debug mode. Prints error information to console.
    * @internal
@@ -128,26 +134,45 @@ export class ClientElevatedPermsError extends Error {
  * @throws ClientElevatedPermsError If the League Client is running as administrator and the script is not (Windows only)
  */
 export async function authenticate(options?: AuthenticationOptions): Promise<Credentials> {
-  async function tryAuthenticate() {
+  async function getProcessCommandLine(isWindows: boolean, executionOptions: { shell?: string; }) {
     const name = options?.name ?? DEFAULT_NAME
-    const portRegex = /--app-port=([0-9]+)(?= *"| --)/
-    const passwordRegex = /--remoting-auth-token=(.+?)(?= *"| --)/
-    const pidRegex = /--app-pid=([0-9]+)(?= *"| --)/
-    const isWindows = process.platform === 'win32'
+
+    if (typeof options?.getProcessCommandLine === 'function') {
+      return options.getProcessCommandLine(isWindows ? `${name}.exe` : name)
+    }
 
     let command: string
+
     if (!isWindows) {
       command = `ps x -o args | grep '${name}'`
-    } else if (isWindows && options?.useDeprecatedWmic === true) {
+
+      const { stdout: rawStdout } = await exec(command, {})
+
+      return rawStdout
+    }
+
+    if (options?.useDeprecatedWmic) {
       command = `wmic process where caption='${name}.exe' get commandline`
     } else {
       command = `Get-CimInstance -Query "SELECT * from Win32_Process WHERE name LIKE '${name}.exe'" | Select-Object -ExpandProperty CommandLine`
     }
 
+    const { stdout: rawStdout } = await exec(command, executionOptions)
+
+    return rawStdout
+  }
+
+  async function tryAuthenticate() {
+    const name = options?.name ?? DEFAULT_NAME
+    const portRegex = /--app-port=([0-9]+)(?= *"| --)/
+    const passwordRegex = /--remoting-auth-token=(.+?)(?= *"| --)/
+    const pidRegex = /--app-pid=([0-9]+)(?= *"| --)/
+    const isWindows = process.platform === 'win32'
+
     const executionOptions = isWindows ? { shell: options?.windowsShell ?? ('powershell' as string) } : {}
 
     try {
-      const { stdout: rawStdout } = await exec(command, executionOptions)
+      const rawStdout = await getProcessCommandLine(isWindows, executionOptions)
       // TODO: investigate regression with calling .replace on rawStdout
       // Remove newlines from stdout
       const stdout = rawStdout.replace(/\n|\r/g, '')
diff --git a/src/tests/authentication.test.ts b/src/tests/authentication.test.ts
index 6dfe230..a579b47 100644
--- a/src/tests/authentication.test.ts
+++ b/src/tests/authentication.test.ts
@@ -65,4 +65,13 @@ describe('authenticating to the api', () => {
 
     expect(credentials?.certificate).toBeUndefined()
   })
+
+  test('authentication using get-command-line detection mode', async () => {
+    const credentials = await authenticate({
+      getProcessCommandLine: () => `C:/Riot Games/LeagueClientUx.exe" "--remoting-auth-token=CUSTOM_TOKEN" "--app-port=57730" "--app-pid=28900"`
+    })
+
+    expect(credentials).toBeDefined()
+    expect(credentials?.certificate).toBeDefined()
+  })
 })