diff --git a/build.gradle b/build.gradle
index 74e88d2..d961204 100644
--- a/build.gradle
+++ b/build.gradle
@@ -26,6 +26,7 @@ version = "1.0"
 
 allprojects {
     repositories {
+        maven { url 'https://jitpack.io' }
         google()
         jcenter()
     }
diff --git a/codec2talkie/build.gradle b/codec2talkie/build.gradle
index 2be75f5..d4c92e7 100644
--- a/codec2talkie/build.gradle
+++ b/codec2talkie/build.gradle
@@ -35,6 +35,7 @@ dependencies {
     implementation 'androidx.appcompat:appcompat:1.2.0'
     implementation 'com.google.android.material:material:1.2.1'
     implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
+    implementation 'com.github.mik3y:usb-serial-for-android:3.3.0'
 
     testImplementation 'junit:junit:4.13.1'
     androidTestImplementation 'androidx.test.ext:junit:1.1.2'
diff --git a/codec2talkie/src/main/AndroidManifest.xml b/codec2talkie/src/main/AndroidManifest.xml
index 05b173f..83f3a39 100644
--- a/codec2talkie/src/main/AndroidManifest.xml
+++ b/codec2talkie/src/main/AndroidManifest.xml
@@ -16,9 +16,12 @@
         <activity android:name=".MainActivity">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
-
+                <action android:name="android.hardware.usb.action.USB_DEVICE_ATTACHED" />
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
+            <meta-data
+                android:name="android.hardware.usb.action.USB_DEVICE_ATTACHED"
+                android:resource="@xml/device_filter" />
         </activity>
     </application>
 
diff --git a/codec2talkie/src/main/res/xml/device_filter.xml b/codec2talkie/src/main/res/xml/device_filter.xml
new file mode 100644
index 0000000..2e98f5e
--- /dev/null
+++ b/codec2talkie/src/main/res/xml/device_filter.xml
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- 0x0403 / 0x60??: FTDI -->
+    <usb-device vendor-id="1027" product-id="24577" /> <!-- 0x6001: FT232R -->
+    <usb-device vendor-id="1027" product-id="24592" /> <!-- 0x6010: FT2232H -->
+    <usb-device vendor-id="1027" product-id="24593" /> <!-- 0x6011: FT4232H -->
+    <usb-device vendor-id="1027" product-id="24596" /> <!-- 0x6014: FT232H -->
+    <usb-device vendor-id="1027" product-id="24597" /> <!-- 0x6015: FT230X, FT231X, FT234XD -->
+
+    <!-- 0x10C4 / 0xEA??: Silabs CP210x -->
+    <usb-device vendor-id="4292" product-id="60000" /> <!-- 0xea60: CP2102 and other CP210x single port devices -->
+    <usb-device vendor-id="4292" product-id="60016" /> <!-- 0xea70: CP2105 -->
+    <usb-device vendor-id="4292" product-id="60017" /> <!-- 0xea71: CP2108 -->
+
+    <!-- 0x067B / 0x2303: Prolific PL2303 -->
+    <usb-device vendor-id="1659" product-id="8963" />
+
+    <!-- 0x1a86 / 0x?523: Qinheng CH34x -->
+    <usb-device vendor-id="6790" product-id="21795" /> <!-- 0x5523: CH341A -->
+    <usb-device vendor-id="6790" product-id="29987" /> <!-- 0x7523: CH340 -->
+
+    <!-- CDC driver -->
+    <usb-device vendor-id="9025" />                   <!-- 0x2341 / ......: Arduino -->
+    <usb-device vendor-id="5824" product-id="1155" /> <!-- 0x16C0 / 0x0483: Teensyduino  -->
+    <usb-device vendor-id="1003" product-id="8260" /> <!-- 0x03EB / 0x2044: Atmel Lufa -->
+    <usb-device vendor-id="7855" product-id="4"    /> <!-- 0x1eaf / 0x0004: Leaflabs Maple -->
+    <usb-device vendor-id="3368" product-id="516"  /> <!-- 0x0d28 / 0x0204: ARM mbed -->
+</resources>
\ No newline at end of file