diff --git a/interface_lib/include/imu_protocol.h b/interface_lib/include/imu_protocol.h
index 1d85607..8db0cc1 100644
--- a/interface_lib/include/imu_protocol.h
+++ b/interface_lib/include/imu_protocol.h
@@ -9,7 +9,11 @@
 #include <cstdint>
 #endif
 
-#include <hidapi/hidapi.h>
+typedef struct imu_hid_info {
+    uint16_t product_id;
+    int interface_number;
+    const char* path;
+} imu_hid_info;
 
 #ifdef __cplusplus
 extern "C" {
@@ -28,7 +32,7 @@ typedef struct imu_sample {
 } imu_sample;
 
 typedef struct imu_protocol {
-    bool (*open)(struct device_imu_t* dev, struct hid_device_info* info);
+    bool (*open)(struct device_imu_t* dev, const struct imu_hid_info* info);
     void (*close)(struct device_imu_t* dev);
 
     bool (*start_stream)(struct device_imu_t* dev);
diff --git a/interface_lib/src/device_imu.c b/interface_lib/src/device_imu.c
index 5232dea..1f05ec7 100644
--- a/interface_lib/src/device_imu.c
+++ b/interface_lib/src/device_imu.c
@@ -241,7 +241,13 @@ device_imu_error_type device_imu_open(device_imu_type* device, device_imu_event_
 	struct hid_device_info* it = info;
 	while (it) {
 		const imu_protocol* protocol = xreal_imu_protocol(it->product_id);
-		if (protocol && protocol->open(device, it)) {
+		// Convert to minimal info for protocol open
+		imu_hid_info mini = {
+			.product_id = it->product_id,
+			.interface_number = it->interface_number,
+			.path = it->path,
+		};
+		if (protocol && protocol->open(device, &mini)) {
 			device->product_id = it->product_id;
 			device->protocol = protocol;
 			break;
diff --git a/interface_lib/src/imu_protocol_hid.c b/interface_lib/src/imu_protocol_hid.c
index ed5d1ca..1f27952 100644
--- a/interface_lib/src/imu_protocol_hid.c
+++ b/interface_lib/src/imu_protocol_hid.c
@@ -26,7 +26,7 @@
 #define device_imu_error(msg) (0)
 #endif
 
-static bool hid_open_impl(device_imu_type* device, struct hid_device_info* info) {
+static bool hid_open_impl(device_imu_type* device, const struct imu_hid_info* info) {
     int iface = xreal_imu_interface_id(info->product_id);
     if (iface != -1 && info->interface_number == iface) {
         #ifndef NDEBUG
diff --git a/interface_lib/src/imu_protocol_xo.c b/interface_lib/src/imu_protocol_xo.c
index a77258d..485c034 100644
--- a/interface_lib/src/imu_protocol_xo.c
+++ b/interface_lib/src/imu_protocol_xo.c
@@ -18,7 +18,7 @@ typedef struct {
     XrealOneHandle* h;
 } xo_ctx;
 
-static bool xo_open_impl(device_imu_type* device, struct hid_device_info* info) {
+static bool xo_open_impl(device_imu_type* device, const struct imu_hid_info* info) {
     if (!device) return false;
     device->handle = NULL;