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Cookie Notice

Last Updated: April 3, 2026 Effective Date: March 26, 2026

This Cookie Notice explains what cookies are, which cookies this site uses, and how you can manage them.


What Are Cookies?

Cookies are small text files placed on your device when you visit a website. They allow the site to recognize your device on subsequent visits, remember your preferences, and collect data about how you use the site.

Cookies are not programs. They cannot carry viruses or install software. They are data files — nothing more.

In addition to traditional cookies, this site uses similar technologies including local storage. This notice covers all of them.


Your Cookie Choices

When you first visit this site, you will see a cookie consent banner. You can accept or decline non-essential cookies from that banner.

Strictly necessary cookies are always active — they are required for the site to function and cannot be switched off.

Analytics and marketing cookies are optional. You can withdraw your consent at any time by clearing your browser cookies and revisiting the site, which will present the consent banner again.


Cookie Categories

Strictly Necessary

These cookies and storage items are required for the site to operate. They cannot be disabled.

Name

Type

Purpose

Duration

r21_cookie_consent

Cookie

Stores your cookie consent choice so you are not asked again on every page

12 months

r21CookieConsent

Local Storage

Mirrors your cookie consent preference for client-side scripts

Persistent (until cleared)

r21SiteAlertDismissed

Local Storage

Remembers which site alerts you have dismissed

Persistent (until cleared)

Session cookies

Cookie

Maintain basic site functionality during your visit

Session (deleted when browser closes)


Functional

These support specific site features and security.

Name

Provider

Purpose

Duration

reCAPTCHA cookies

Google

Spam and bot protection on contact forms. reCAPTCHA v3 analyzes user behavior to detect automated submissions.

Session

r21-pwa-install-dismissed

First-party (Local Storage)

Remembers if you dismissed the app install prompt

Persistent (until cleared)

r21-pwa-visit-count

First-party (Local Storage)

Tracks visit count to determine when to show app install prompt

Persistent (until cleared)

reCAPTCHA's use of data is governed by the Google Privacy Policy.


Analytics

These cookies help us understand how visitors use the site. The data is aggregated and does not identify you personally. These cookies are set only if you consent.

Name

Provider

Purpose

Duration

r21_attr

First-party

Stores marketing attribution data (UTM source, medium, campaign, landing page, and referrer) to understand how you found this site. Used to attribute form submissions to the correct marketing channel. Set only with your consent.

1 year

_ga

Google Analytics

Distinguishes unique users by assigning a randomly generated number as a client identifier

2 years

_gid

Google Analytics

Distinguishes users and stores a unique value for each page visited

24 hours

_ga_[ID]

Google Analytics

Used to persist session state

2 years

Google Tag Manager may also set additional cookies depending on the tags configured in our container.

Google Analytics opt-out: You can opt out of Google Analytics across all websites using the Google Analytics Opt-out Browser Add-on.


Marketing

These cookies are used to show relevant advertisements to previous visitors on other websites (remarketing). They are set by third-party advertising platforms, not directly by this site. These cookies are set only if you consent.

We may use the following advertising platforms. When active, they set their own cookies:

  • Google Ads — Measures ad conversion and supports remarketing. Manage your settings at adssettings.google.com.

  • Facebook/Meta Pixel — Supports remarketing to Facebook and Instagram users, if active.

  • LinkedIn Insight Tag — Supports remarketing to LinkedIn users, if active.

Not all of these platforms may be active at any given time. Marketing cookies are only set when both (a) you have consented and (b) the platform is enabled on this site.


Third-Party Resources (Non-Cookie)

This site loads resources from third-party services that do not set cookies but are noted here for transparency:

Resource

Provider

Purpose

Web fonts (Inter, Manrope, Space Mono, PT Mono)

Google Fonts

Typography

Icons (Font Awesome 6.5.1)

Cloudflare CDN

Icon library

These services may log requests (including your IP address) per their own privacy policies. They do not set cookies on your device.


Managing Cookies in Your Browser

You can control cookies at the browser level:

Note: Blocking all cookies will affect site functionality. Strictly necessary cookies are required for the site to work correctly. If you block them, some features may not behave as expected.


Do Not Track

Some browsers send a "Do Not Track" signal. This site does not currently respond to Do Not Track signals. If that changes, this notice will be updated.


Changes to This Notice

We will update this Cookie Notice when we add or remove cookies or change how we use them. The "Last Updated" date at the top of this page reflects the most recent revision.


Contact

Questions about cookies or this notice?

Reaction21 Inc.
Houston, Texas
info@reaction21.com
reaction21.com