This policy applies to [NFC smart lock] and its related services. This policy shall come into effect as of December 9th, 2025. If there is any subsequent update, a 7 - day notice will be given within the App. Using the App means that you agree to this policy.

Welcome to use [NFC smart lock name] (developed by [Shenzhen Zhicheng Kelaidi Technology Co., Ltd.], hereinafter referred to as “we”). This privacy policy is designed to explain how we collect, use, store and protect the personal information you provide during the use of the App, as well as the relevant rights you enjoy. Your use of this App indicates that you have read, understood and agreed to all the contents of this policy. This policy shall come into effect as of December 9th, 2025. If there is any update, we will notify you through a pop - up window in the App or an announcement on the official website.

1. The personal information we collect (email, username) is used for account registration, login verification and password recovery. We do not collect your location information. The email is used to verify your identity to ensure account security.

2. Sharing and transfer of information. We will not share your personal information with any third - party (except as required by laws and regulations).

3. Storage and protection of information. Storage location: Your personal information is stored on Alibaba Cloud servers within the Chinese mainland. If it is necessary to store it overseas due to international business needs, we will go through the filing procedures in accordance with the Personal Information Protection Law of China. Storage period: Account information (email, username) will be deleted within 15 days after you cancel your account; behavioral data (click records) will be retained for 1 year and anonymized after the expiration (deleting the identifiers associated with individuals). Protection measures: We adopt measures such as SSL - encrypted data transmission, server - side firewalls, and regular security audits to prevent data leakage. Only authorized necessary staff can access the data, and they are required to sign a non - disclosure agreement.

4. Users' rights. Access/query: You can view your account information and authorized permissions in [My - Settings - Privacy Center] in the App. Modification/correction: If you find that your password is incorrect, you can recover it through the password - recovery function, and it will be verified by email after modification. Data deletion: You can apply to delete behavioral data in [Privacy Center], and we will process it and give feedback within 3 working days. Account cancellation: You can submit an application in [My - Settings - Account Cancellation]. After cancellation, all personal information will be deleted (except as required by laws and regulations). Please back up the data before cancellation.

5. We do not actively collect the personal information of minors (under 14 years old). If you are a minor, you need to use this App with the consent of your guardian. If the guardian finds that the minor's information has been collected, they can contact us to delete it, and we will process it within 3 working days.

6. If this policy is subsequently updated, we will prompt you with a pop - up window in the App and mark the “update date” on the [Privacy Policy] page of the official website. If you continue to use the App, you are deemed to have agreed to the updated policy. It is recommended that you check this policy regularly.

7. If you have any questions about this privacy policy or need to exercise your data rights, you can contact us in the following ways: - Company name: [Shenzhen Zhicheng Kelaidi Technology Co., Ltd.]; - Contact email: 534303867@qq.com; - Contact phone: 13823604435. We will reply to your consultation within 5 working days.