Privacy Policy

Effective Date: [5/1/2026]

Protecting your private information is our priority. This Privacy Policy applies to National Interlock and governs data collection and usage. For the purposes of this Privacy Policy, unless otherwise noted, all references to National Interlock include National Interlock and National Interlock LLC. By using this website, you consent to the data practices described in this statement.

Collection of Your Personal Information

In order to better provide you with products and services offered on our Site, National Interlock may collect personally identifiable information, including but not limited to:

First and Last Name
Mailing Address
Email Address
Phone Number
Driver’s License Information (if applicable)
Vehicle Information (if applicable)

If you purchase products or services from National Interlock, we may collect billing and payment information. This information is used solely to complete purchase transactions and provide requested services.

We do not collect personal information unless you voluntarily provide it to us. However, you may be required to provide certain information when you:

Request a quote or consultation
Schedule an installation or service appointment
Complete forms on our website
Contact us by phone, email, or online form
Make payments for services
Subscribe to updates or promotional communications

We may also collect additional non-personal information in the future to improve our services.

Use of Your Personal Information

National Interlock collects and uses your personal information to:

Operate and maintain our website
Provide ignition interlock installation and monitoring services
Process transactions and payments
Schedule appointments and customer support services
Respond to inquiries and requests
Send service updates, reminders, and promotional communications
Improve website functionality and customer experience

Sharing Information with Third Parties

National Interlock does not sell, rent, or lease customer information to third parties.

We may share information with trusted third-party service providers who assist us in operating our business, including:

Payment processors
Hosting providers
Customer communication platforms
Analytics providers
Compliance and monitoring partners

These third parties are required to maintain the confidentiality and security of your information and may only use it for authorized business purposes.

We may also disclose personal information if required by law or if necessary to:

Comply with legal obligations or court orders
Protect the rights or property of National Interlock
Protect the safety of customers or the public
Prevent fraud or security threats

Tracking User Behavior

National Interlock may track website usage and visitor activity in order to determine which services and pages are most frequently used. This information helps us improve website performance, customer experience, and marketing efforts.

Automatically Collected Information

Information about your device and browsing activity may automatically be collected when visiting our website. This information may include:

IP address
Browser type
Device information
Access times
Referring website addresses

This data is used for website analytics, administration, and improving overall service quality.

Use of Cookies

Our website may use “cookies” to personalize your online experience and improve website functionality.

Cookies are small text files stored on your device that help recognize returning visitors and remember preferences. Most web browsers automatically accept cookies, but you can modify your browser settings to decline cookies if you prefer.

Disabling cookies may limit certain website features or functionality.

Third-Party Links

This website may contain links to third-party websites. National Interlock is not responsible for the privacy practices or content of external websites. We encourage users to review the privacy policies of any linked sites they visit.

Security of Your Personal Information

National Interlock takes reasonable security measures to protect your personal information from unauthorized access, use, or disclosure.

Security measures may include:

SSL (Secure Socket Layer) encryption
Secure payment processing
Restricted access to customer information
Industry-standard data protection practices

While we strive to protect personal information, no method of internet transmission or electronic storage is completely secure, and we cannot guarantee absolute security.

Children Under Thirteen

National Interlock does not knowingly collect personally identifiable information from children under the age of thirteen. If you are under thirteen, you must obtain permission from a parent or guardian before using this website.

Email and SMS Communications

National Interlock may contact you via email, phone call, or SMS text message regarding:

Appointment confirmations
Service reminders
Account notifications
Promotional offers
Customer support communications

You may opt out of marketing communications at any time by following the unsubscribe instructions provided in emails or by contacting us directly.

Standard message and data rates may apply for SMS communications.

External Data Storage

Customer information may be stored on secure servers operated by third-party hosting and technology providers contracted by National Interlock.

Changes to This Privacy Policy

National Interlock reserves the right to modify this Privacy Policy at any time. Changes will be posted on this page with an updated effective date.

Your continued use of the website after changes are posted constitutes acceptance of the updated Privacy Policy.

Contact Information

If you have questions regarding this Privacy Policy, please contact:

National Interlock
5446 Hilton Industrial Way

Knoxville TN 37921
Phone: 865-252-3669
Website: tnduiservices.com