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--- /dev/null
+++ b/tests/integration/nano/test_blindsign.py
@@ -0,0 +1,204 @@
+#!/usr/bin/env python3
+# Copyright 2024 Functori <contact@functori.com>
+
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+
+# http://www.apache.org/licenses/LICENSE-2.0
+
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from pathlib import Path
+from typing import Callable
+
+from utils.app import Screen, Screen_text, DEFAULT_ACCOUNT
+from utils.message import Message
+from utils.backend import StatusCode
+
+test_path = Path(Path(__file__).stem)
+
+def _blind_sign(app, msg: str, navigate: Callable[[], None]):
+
+    app.setup_expert_mode()
+    app.setup_blindsign_on()
+
+    message = Message.from_bytes(msg)
+
+    data = app._sign(
+        DEFAULT_ACCOUNT,
+        message,
+        with_hash=True,
+        navigate=navigate)
+
+    app.checker.check_signature(
+        account=DEFAULT_ACCOUNT,
+        message=message,
+        with_hash=True,
+        data=data)
+
+    app.quit()
+
+def _blind_reject(
+        app,
+        msg: str,
+        status_code: StatusCode,
+        navigate: Callable[[], None]):
+
+    app.setup_expert_mode()
+    app.setup_blindsign_on()
+
+    message = Message.from_bytes(msg)
+
+    app._failing_signing(
+        DEFAULT_ACCOUNT,
+        message,
+        with_hash=True,
+        navigate=navigate,
+        status_code=status_code)
+
+    app.quit()
+
+
+basic_test_path = test_path / "basic"
+
+## Operation (0): Reveal
+# Source: tz1ixvCiPJYyMjsp2nKBVaq54f6AdbV8hCKa
+# Fee: 1 XTZ
+# Storage limit: 4
+# Public key: p2pk66m3NQsd4n6LJWe9WMwx9WHeXwKmBaMwXX92WkMQCR99zmwk2PM
+## Operation (1): Transaction
+# Source: tz1ixvCiPJYyMjsp2nKBVaq54f6AdbV8hCKa
+# Fee: 2 XTZ
+# Storage limit: 7
+# Amount: 3 XTZ
+# Destination: tz3XMQscBFM9vPmpbYMavMmwxRMUWvWGZMQQ
+# Entrypoint: update_config
+# Parameter: Pair 5 True
+## Operation (2): Delegation
+# Source: tz1ixvCiPJYyMjsp2nKBVaq54f6AdbV8hCKa
+# Fee: 3 XTZ
+# Storage limit: 5
+# Delegate: tz2W3Tvcm64GjcV2bipUynnEsctLFz5Z6yRa
+## Operation (3): SR: send messages
+# Source: tz1ixvCiPJYyMjsp2nKBVaq54f6AdbV8hCKa
+# Fee: 4 XTZ
+# Storage limit: 6
+# Message (0):  6d65737361676530
+# Message (1):  6d65737361676531
+# Message (2):  6d65737361676532
+# Message (3):  6d65737361676533
+# Message (4):  6d65737361676534
+# Message (5):  6d65737361676535
+# Message (6):  6d65737361676536
+# Message (7):  6d65737361676537
+# Message (8):  6d65737361676538
+# Message (9):  6d65737361676539
+# Message (10): 6d6573736167653130
+# Message (11): 6d6573736167653131
+# Message (12): 6d6573736167653132
+# Message (13): 6d6573736167653133
+# Message (14): 6d6573736167653134
+# Message (15): 6d6573736167653135
+# Message (16): 6d6573736167653136
+# Message (17): 6d6573736167653137
+# Message (18): 6d6573736167653138
+# Message (19): 6d6573736167653139
+## Operation (4): Set deposit limit
+# Source: tz1ixvCiPJYyMjsp2nKBVaq54f6AdbV8hCKa
+# Fee: 1 XTZ
+# Storage limit: 3
+# Staking limit: 10 XTZ
+basic_operation = "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"
+
+def test_blind_sign_basic_operation(app):
+    path = basic_test_path / "accept"
+
+    def navigate() -> None:
+        app.navigate_until_text(Screen_text.Sign_accept, path)
+
+    _blind_sign(app, basic_operation, navigate)
+
+def test_blind_reject_basic_operation(app):
+    path = basic_test_path / "reject"
+
+    def navigate() -> None:
+        app.navigate_until_text(Screen_text.Sign_reject, path)
+
+    _blind_reject(app, basic_operation, StatusCode.REJECT, navigate)
+
+
+### Operation containing a too large number ###
+
+too_large_test_path = test_path / "too_large"
+
+# Operation (0): SR: send messages
+# Source: tz1ixvCiPJYyMjsp2nKBVaq54f6AdbV8hCKa
+# Fee: 4 XTZ
+# Storage limit: 6
+# Message (0):  6d65737361676530
+# Message (1):  6d65737361676531
+# Message (2):  6d65737361676532
+# Message (3):  6d65737361676533
+# Message (4):  6d65737361676534
+# Message (5):  6d65737361676535
+# Message (6):  6d65737361676536
+# Message (7):  6d65737361676537
+# Message (8):  6d65737361676538
+# Message (9):  6d65737361676539
+# Message (10): 6d6573736167653130
+# Message (11): 6d6573736167653131
+# Message (12): 6d6573736167653132
+# Message (13): 6d6573736167653133
+# Message (14): 6d6573736167653134
+# Message (15): 6d6573736167653135
+# Message (16): 6d6573736167653136
+# Message (17): 6d6573736167653137
+# Message (18): 6d6573736167653138
+# Message (19): 6d6573736167653139
+# Message (20): 6d6573736167653230
+# Message (21): 6d6573736167653231
+# Message (22): 6d6573736167653232
+# Message (23): 6d6573736167653233
+# Message (24): 6d6573736167653234
+# Message (25): 6d6573736167653235
+# Message (26): 6d6573736167653236
+# Message (27): 6d6573736167653237
+# Message (28): 6d6573736167653238
+# Message (29): 6d6573736167653239
+## Operation (1): Register global constant
+# Source: tz1ixvCiPJYyMjsp2nKBVaq54f6AdbV8hCKa
+# Fee: 5 XTZ
+# Storage limit: 3
+# Value: 115792089237316195423570985008687907853269984665640564039457584007913129639936
+operation_with_too_large = "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"
+
+def test_blind_sign_operation_with_too_large(app):
+    path = too_large_test_path / "accept"
+
+    def navigate() -> None:
+        app.navigate_until_text(Screen_text.Accept_risk, path / "too_large_warning")
+        app.navigate_until_text(Screen_text.Sign_accept, path / "blindsigning")
+
+    _blind_sign(app, operation_with_too_large, navigate)
+
+def test_blind_reject_operation_with_too_large_at_too_large_warning(app):
+    path = too_large_test_path / "reject_at_too_large_warning"
+
+    def navigate() -> None:
+        app.navigate_until_text(Screen_text.Sign_reject, path / "too_large_warning")
+
+    _blind_reject(app, operation_with_too_large, StatusCode.PARSE_ERROR, navigate)
+
+def test_blind_reject_operation_with_too_large_at_blindsigning(app):
+    path = too_large_test_path / "reject_at_blindsigning"
+
+    def navigate() -> None:
+        app.navigate_until_text(Screen_text.Accept_risk, path / "too_large_warning")
+        app.navigate_until_text(Screen_text.Sign_reject, path / "blindsigning")
+
+    _blind_reject(app, operation_with_too_large, StatusCode.REJECT, navigate)
diff --git a/tests/integration/nano/utils/app.py b/tests/integration/nano/utils/app.py
index 37ce933fb..7591fe010 100644
--- a/tests/integration/nano/utils/app.py
+++ b/tests/integration/nano/utils/app.py
@@ -228,6 +228,23 @@ def setup_expert_mode(self) -> None:
         self.backend.both_click()
         self.assert_screen(Screen.Home)
 
+    def setup_blindsign_on(self) -> None:
+        self.assert_screen(Screen.Home)
+        self.backend.right_click()
+        self.assert_screen(Screen.Version)
+        self.backend.right_click()
+        self.assert_screen(Screen.Settings)
+        self.backend.both_click()
+        # expert_mode screen
+        self.backend.right_click()
+        self.assert_screen(Screen.Settings_blindsign_large_tx)
+        self.backend.both_click()
+        self.assert_screen(Screen.Settings_blindsign_on)
+        self.backend.right_click()
+        self.assert_screen(Screen.Settings_back)
+        self.backend.both_click()
+        self.assert_screen(Screen.Home)
+
     def setup_blindsign_off(self) -> None:
         self.assert_screen(Screen.Home)
         self.backend.right_click()