This Cookie Policy explains how Checksum Works LLC (“Mastlens,” “we,” “us,” or “our”) uses cookies and similar technologies on our website and applications. It should be read together with our Privacy Policy.
What Are Cookies?
Cookies are small text files placed on your device when you visit a website. They are widely used to make websites work, to remember your preferences, and to provide information to site operators. Session cookies are deleted when you close your browser; persistent cookies remain until they expire or you delete them. “First-party” cookies are set by Mastlens; “third-party” cookies are set by other providers. We also use similar technologies such as local storage and pixels, which we refer to collectively as “cookies” in this policy.
How We Use Cookies
Strictly necessary cookies
These are essential for the Services to function and cannot be switched off in our systems. They include cookies that:
- keep you signed in and maintain your authenticated session;
- protect against cross-site request forgery (CSRF) and other security risks; and
- support core load-balancing and reliability.
Functional / preference cookies
These remember choices you make (such as interface preferences) to provide a more personalized experience. If disabled, some features may not work as intended.
Analytics cookies
We use Google Analytics to understand how visitors interact with our website so we can improve it. These analytics cookies are only set after you accept them via our cookie banner — until then, Google Analytics runs in a cookieless mode (Google Consent Mode). You can decline, and you can change your choice later by clearing this site’s data in your browser. We do not use cookies for advertising or cross-context behavioral targeting.
Third-Party Cookies
Some features rely on third-party providers that may set their own cookies, including:
- Stripe — payment processing and fraud prevention during checkout.
- Google Maps Platform — maps and address lookups within the application.
- Google Analytics — website traffic and usage measurement on our marketing site, loaded only after you accept analytics cookies.
These providers’ use of cookies is governed by their own privacy and cookie policies.
Managing Your Cookies
Most browsers let you view, manage, block, and delete cookies through their settings. Because strictly necessary cookies are required for the Services to function, blocking them may prevent you from signing in or using parts of the platform. To manage cookies, see your browser’s help pages (for example, Chrome, Safari, Firefox, or Edge).
Do Not Track
Some browsers offer a “Do Not Track” (DNT) signal. Because there is no common industry standard for how to respond to DNT signals, we do not currently respond to them. We will update this policy if that changes.
Changes to This Policy
We may update this Cookie Policy from time to time. We will post the updated version with a new “Last updated” date.
Contact Us
Questions about our use of cookies? Contact us at privacy@mastlens.com.