diff --git a/mobile/lib/bridge_definitions.dart b/mobile/lib/bridge_definitions.dart
index bd62891..6c2789a 100644
--- a/mobile/lib/bridge_definitions.dart
+++ b/mobile/lib/bridge_definitions.dart
@@ -12,6 +12,10 @@ abstract class Native {
   Future<TxConfig?> getTxConfig({required Uint8List bytes, dynamic hint});
 
   FlutterRustBridgeTaskConstMeta get kGetTxConfigConstMeta;
+
+  Future<bool> checkRaptor({required Uint8List buffer, required TxConfig txconf, dynamic hint});
+
+  FlutterRustBridgeTaskConstMeta get kCheckRaptorConstMeta;
 }
 
 class TxConfig {
diff --git a/mobile/lib/bridge_generated.dart b/mobile/lib/bridge_generated.dart
index e251d34..140944b 100644
--- a/mobile/lib/bridge_generated.dart
+++ b/mobile/lib/bridge_generated.dart
@@ -40,6 +40,23 @@ class NativeImpl implements Native {
         argNames: ["bytes"],
       );
 
+  Future<bool> checkRaptor({required Uint8List buffer, required TxConfig txconf, dynamic hint}) {
+    var arg0 = _platform.api2wire_uint_8_list(buffer);
+    var arg1 = _platform.api2wire_box_autoadd_tx_config(txconf);
+    return _platform.executeNormal(FlutterRustBridgeTask(
+      callFfi: (port_) => _platform.inner.wire_check_raptor(port_, arg0, arg1),
+      parseSuccessData: _wire2api_bool,
+      constMeta: kCheckRaptorConstMeta,
+      argValues: [buffer, txconf],
+      hint: hint,
+    ));
+  }
+
+  FlutterRustBridgeTaskConstMeta get kCheckRaptorConstMeta => const FlutterRustBridgeTaskConstMeta(
+        debugName: "check_raptor",
+        argNames: ["buffer", "txconf"],
+      );
+
   void dispose() {
     _platform.dispose();
   }
@@ -49,6 +66,10 @@ class NativeImpl implements Native {
     return raw as String;
   }
 
+  bool _wire2api_bool(dynamic raw) {
+    return raw as bool;
+  }
+
   TxConfig _wire2api_box_autoadd_tx_config(dynamic raw) {
     return _wire2api_tx_config(raw);
   }
@@ -86,6 +107,11 @@ class NativeImpl implements Native {
 
 // Section: api2wire
 
+@protected
+int api2wire_u16(int raw) {
+  return raw;
+}
+
 @protected
 int api2wire_u8(int raw) {
   return raw;
@@ -98,6 +124,23 @@ class NativePlatform extends FlutterRustBridgeBase<NativeWire> {
 
 // Section: api2wire
 
+  @protected
+  ffi.Pointer<wire_uint_8_list> api2wire_String(String raw) {
+    return api2wire_uint_8_list(utf8.encoder.convert(raw));
+  }
+
+  @protected
+  ffi.Pointer<wire_TxConfig> api2wire_box_autoadd_tx_config(TxConfig raw) {
+    final ptr = inner.new_box_autoadd_tx_config_0();
+    _api_fill_to_wire_tx_config(raw, ptr.ref);
+    return ptr;
+  }
+
+  @protected
+  int api2wire_u64(int raw) {
+    return raw;
+  }
+
   @protected
   ffi.Pointer<wire_uint_8_list> api2wire_uint_8_list(Uint8List raw) {
     final ans = inner.new_uint_8_list_0(raw.length);
@@ -107,6 +150,16 @@ class NativePlatform extends FlutterRustBridgeBase<NativeWire> {
 // Section: finalizer
 
 // Section: api_fill_to_wire
+
+  void _api_fill_to_wire_box_autoadd_tx_config(TxConfig apiObj, ffi.Pointer<wire_TxConfig> wireObj) {
+    _api_fill_to_wire_tx_config(apiObj, wireObj.ref);
+  }
+
+  void _api_fill_to_wire_tx_config(TxConfig apiObj, wire_TxConfig wireObj) {
+    wireObj.len = api2wire_u64(apiObj.len);
+    wireObj.mtu = api2wire_u16(apiObj.mtu);
+    wireObj.description = api2wire_String(apiObj.description);
+  }
 }
 
 // ignore_for_file: camel_case_types, non_constant_identifier_names, avoid_positional_boolean_parameters, annotate_overrides, constant_identifier_names
@@ -202,6 +255,33 @@ class NativeWire implements FlutterRustBridgeWireBase {
   late final _wire_get_tx_config =
       _wire_get_tx_configPtr.asFunction<void Function(int, ffi.Pointer<wire_uint_8_list>)>();
 
+  void wire_check_raptor(
+    int port_,
+    ffi.Pointer<wire_uint_8_list> buffer,
+    ffi.Pointer<wire_TxConfig> txconf,
+  ) {
+    return _wire_check_raptor(
+      port_,
+      buffer,
+      txconf,
+    );
+  }
+
+  late final _wire_check_raptorPtr = _lookup<
+          ffi.NativeFunction<ffi.Void Function(ffi.Int64, ffi.Pointer<wire_uint_8_list>, ffi.Pointer<wire_TxConfig>)>>(
+      'wire_check_raptor');
+  late final _wire_check_raptor =
+      _wire_check_raptorPtr.asFunction<void Function(int, ffi.Pointer<wire_uint_8_list>, ffi.Pointer<wire_TxConfig>)>();
+
+  ffi.Pointer<wire_TxConfig> new_box_autoadd_tx_config_0() {
+    return _new_box_autoadd_tx_config_0();
+  }
+
+  late final _new_box_autoadd_tx_config_0Ptr =
+      _lookup<ffi.NativeFunction<ffi.Pointer<wire_TxConfig> Function()>>('new_box_autoadd_tx_config_0');
+  late final _new_box_autoadd_tx_config_0 =
+      _new_box_autoadd_tx_config_0Ptr.asFunction<ffi.Pointer<wire_TxConfig> Function()>();
+
   ffi.Pointer<wire_uint_8_list> new_uint_8_list_0(
     int len,
   ) {
@@ -236,6 +316,16 @@ final class wire_uint_8_list extends ffi.Struct {
   external int len;
 }
 
+final class wire_TxConfig extends ffi.Struct {
+  @ffi.Uint64()
+  external int len;
+
+  @ffi.Uint16()
+  external int mtu;
+
+  external ffi.Pointer<wire_uint_8_list> description;
+}
+
 typedef DartPostCObjectFnType
     = ffi.Pointer<ffi.NativeFunction<ffi.Bool Function(DartPort port_id, ffi.Pointer<ffi.Void> message)>>;
 typedef DartPort = ffi.Int64;
diff --git a/mobile/lib/main.dart b/mobile/lib/main.dart
index 6716d37..b3aad83 100644
--- a/mobile/lib/main.dart
+++ b/mobile/lib/main.dart
@@ -49,9 +49,10 @@ class _MyHomePageState extends State<MyHomePage> {
   late final Stream<List<String>> _barcodesStream = _barcodesController.stream;
   final _scrollController = ScrollController();
 
-  final TxConfig? _txConfig = null;
-  final _rxData = <Uint8>[];
-  final _cuttleState = CuttleState.unitialized;
+  TxConfig? _txConfig;
+  String? _rxText;
+  var _cuttleState = CuttleState.unitialized;
+  final _rxData = <int>[];
 
   @override
   void dispose() {
@@ -68,7 +69,7 @@ class _MyHomePageState extends State<MyHomePage> {
           androidOptions: const AndroidAnalysisOptions.nv21(
             width: 1024,
           ),
-          maxFramesPerSecond: 5,
+          maxFramesPerSecond: null,
           autoStart: false,
         ),
         builder: (cameraModeState, previewSize, previewRect) {
@@ -88,7 +89,44 @@ class _MyHomePageState extends State<MyHomePage> {
     try {
       var recognizedBarCodes = await _barcodeScanner.processImage(inputImage);
       for (Barcode barcode in recognizedBarCodes) {
-        debugPrint("Barcode: [${barcode.format}]: ${barcode.rawBytes}");
+        var bytes = barcode.rawBytes;
+        if (bytes == null) {
+          continue;
+        }
+        final dbytes = bytes;
+        switch (_cuttleState) {
+          case CuttleState.unitialized:
+            {
+              var txconf = await api.getTxConfig(bytes: dbytes);
+              if (txconf != null) {
+                _txConfig = txconf;
+                _cuttleState = CuttleState.receiving;
+                debugPrint(
+                    "txconf: ${txconf.len} bytes, \"${txconf.description}\"");
+                continue;
+              }
+              // implicit else here; txconf was null
+              var text = barcode.rawValue;
+              if (text != null) {
+                // it's not a txconfig, and it's not a raptor packet, so it must be a regular qr code
+                _rxText = text;
+                _cuttleState = CuttleState.received;
+              }
+            }
+
+          case CuttleState.receiving:
+            {
+              final check = await api.checkRaptor(
+                  buffer: Uint8List.fromList(_rxData), txconf: _txConfig!);
+              if (check) {
+                _cuttleState = CuttleState.received;
+              }
+            }
+
+          case CuttleState.received:
+            continue;
+        }
+
         _addBarcode("[${barcode.format.name}]: ${barcode.rawValue}");
       }
     } catch (error) {
diff --git a/mobile/native/src/api.rs b/mobile/native/src/api.rs
index 2639527..7075e68 100644
--- a/mobile/native/src/api.rs
+++ b/mobile/native/src/api.rs
@@ -27,3 +27,7 @@ pub fn get_tx_config(bytes: Vec<u8>) -> Option<TxConfig> {
     }
     None
 }
+
+pub fn check_raptor(buffer: Vec<u8>, txconf: TxConfig) -> bool {
+    false
+}
diff --git a/mobile/native/src/bridge_generated.io.rs b/mobile/native/src/bridge_generated.io.rs
index 97bfe87..0870c5d 100644
--- a/mobile/native/src/bridge_generated.io.rs
+++ b/mobile/native/src/bridge_generated.io.rs
@@ -6,8 +6,22 @@ pub extern "C" fn wire_get_tx_config(port_: i64, bytes: *mut wire_uint_8_list) {
     wire_get_tx_config_impl(port_, bytes)
 }
 
+#[no_mangle]
+pub extern "C" fn wire_check_raptor(
+    port_: i64,
+    buffer: *mut wire_uint_8_list,
+    txconf: *mut wire_TxConfig,
+) {
+    wire_check_raptor_impl(port_, buffer, txconf)
+}
+
 // Section: allocate functions
 
+#[no_mangle]
+pub extern "C" fn new_box_autoadd_tx_config_0() -> *mut wire_TxConfig {
+    support::new_leak_box_ptr(wire_TxConfig::new_with_null_ptr())
+}
+
 #[no_mangle]
 pub extern "C" fn new_uint_8_list_0(len: i32) -> *mut wire_uint_8_list {
     let ans = wire_uint_8_list {
@@ -21,6 +35,28 @@ pub extern "C" fn new_uint_8_list_0(len: i32) -> *mut wire_uint_8_list {
 
 // Section: impl Wire2Api
 
+impl Wire2Api<String> for *mut wire_uint_8_list {
+    fn wire2api(self) -> String {
+        let vec: Vec<u8> = self.wire2api();
+        String::from_utf8_lossy(&vec).into_owned()
+    }
+}
+impl Wire2Api<TxConfig> for *mut wire_TxConfig {
+    fn wire2api(self) -> TxConfig {
+        let wrap = unsafe { support::box_from_leak_ptr(self) };
+        Wire2Api::<TxConfig>::wire2api(*wrap).into()
+    }
+}
+impl Wire2Api<TxConfig> for wire_TxConfig {
+    fn wire2api(self) -> TxConfig {
+        TxConfig {
+            len: self.len.wire2api(),
+            mtu: self.mtu.wire2api(),
+            description: self.description.wire2api(),
+        }
+    }
+}
+
 impl Wire2Api<Vec<u8>> for *mut wire_uint_8_list {
     fn wire2api(self) -> Vec<u8> {
         unsafe {
@@ -31,6 +67,14 @@ impl Wire2Api<Vec<u8>> for *mut wire_uint_8_list {
 }
 // Section: wire structs
 
+#[repr(C)]
+#[derive(Clone)]
+pub struct wire_TxConfig {
+    len: u64,
+    mtu: u16,
+    description: *mut wire_uint_8_list,
+}
+
 #[repr(C)]
 #[derive(Clone)]
 pub struct wire_uint_8_list {
@@ -50,6 +94,22 @@ impl<T> NewWithNullPtr for *mut T {
     }
 }
 
+impl NewWithNullPtr for wire_TxConfig {
+    fn new_with_null_ptr() -> Self {
+        Self {
+            len: Default::default(),
+            mtu: Default::default(),
+            description: core::ptr::null_mut(),
+        }
+    }
+}
+
+impl Default for wire_TxConfig {
+    fn default() -> Self {
+        Self::new_with_null_ptr()
+    }
+}
+
 // Section: sync execution mode utility
 
 #[no_mangle]
diff --git a/mobile/native/src/bridge_generated.rs b/mobile/native/src/bridge_generated.rs
index a556e89..6c63a24 100644
--- a/mobile/native/src/bridge_generated.rs
+++ b/mobile/native/src/bridge_generated.rs
@@ -35,6 +35,24 @@ fn wire_get_tx_config_impl(port_: MessagePort, bytes: impl Wire2Api<Vec<u8>> + U
         },
     )
 }
+fn wire_check_raptor_impl(
+    port_: MessagePort,
+    buffer: impl Wire2Api<Vec<u8>> + UnwindSafe,
+    txconf: impl Wire2Api<TxConfig> + UnwindSafe,
+) {
+    FLUTTER_RUST_BRIDGE_HANDLER.wrap::<_, _, _, bool>(
+        WrapInfo {
+            debug_name: "check_raptor",
+            port: Some(port_),
+            mode: FfiCallMode::Normal,
+        },
+        move || {
+            let api_buffer = buffer.wire2api();
+            let api_txconf = txconf.wire2api();
+            move |task_callback| Ok(check_raptor(api_buffer, api_txconf))
+        },
+    )
+}
 // Section: wrapper structs
 
 // Section: static checks
@@ -57,6 +75,17 @@ where
         (!self.is_null()).then(|| self.wire2api())
     }
 }
+
+impl Wire2Api<u16> for u16 {
+    fn wire2api(self) -> u16 {
+        self
+    }
+}
+impl Wire2Api<u64> for u64 {
+    fn wire2api(self) -> u64 {
+        self
+    }
+}
 impl Wire2Api<u8> for u8 {
     fn wire2api(self) -> u8 {
         self