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Cookie Policy

Last updated: 7 October 2026

On this page
  1. Data controller
  2. What are cookies?
  3. Legal basis for cookies
  4. Cookies we use
  5. Third-party services and international data transfers
  6. Managing your cookie preferences
  7. Your rights
  8. Changes to this Cookie Policy
  9. Contact us

This Cookie Policy explains how Lumin Pro Ltd. ("Lumin", "we", "us", or "our") uses cookies and similar technologies on lumin.pro (the "Site"). We are committed to respecting your privacy and complying with the UK General Data Protection Regulation (UK GDPR), the Data Protection Act 2018, and the Privacy and Electronic Communications Regulations (PECR).

1Data controller

The data controller responsible for your personal data is:

Lumin Pro Ltd.
66 Paul Street, London, EC2A 4NA
Email: privacy@lumin.pro

2What are cookies?

Cookies are small text files placed on your device when you visit a website. They allow a website to recognise your device and store information about your preferences or past actions.

We use one cookie and a small amount of browser storage, all of it first-party: set by Lumin and read only by Lumin. No third-party cookies are set on the Site.

3Legal basis for cookies

Under PECR and UK GDPR, the legal basis for our use of cookies depends on their purpose:

  • Strictly necessary and functional cookies do not require consent. They are essential for the Site to function, or exist only because of something you did, such as saving a draft or choosing a setting.
  • Analytics and advertising cookies require your consent. We don't currently use either. You can choose whether to allow advertising cookies through the cookie banner or Settings > Cookie preferences in the Lumin app, and withdraw consent at any time. If we ever add analytics or advertising cookies, we will ask for your consent before using them.

4Cookies we use

As well as one cookie, we keep a few small items in your browser’s storage on your device. UK rules (PECR) treat these in the same way as cookies, so we list them here too. There are two kinds:

  • Local storage stays on your device until it is cleared. We clear the personal items when you sign out, as shown below, and you can clear the rest through your browser settings.
  • Session storage is cleared automatically when you close the tab or app.

Everything listed is first-party: it is set by Lumin, read only by Lumin, and never sent to anyone else.

4a. Strictly necessary

These are essential for the Site to work and cannot be turned off. They are set in response to your actions, such as signing in or choosing your cookie preferences.

NamePurposeStored inHow long
PHPSESSIDKeeps you signed inCookie90 days, or until you sign out
cookie_consent_accepted, cookie_preferencesRemember that you have answered the cookie banner, and the choices you madeLocal storageUntil cleared

4b. Functional

These remember your preferences and settings, your place in the app, and things you are working on. They are always on, because each one exists only because of something you did.

NamePurposeStored inHow long
post_draftSaves a post you have started but not publishedLocal storage7 days, or until you sign out
scratchpad_contentSaves the text in your scratchpadLocal storageUntil you sign out
scratchpad_heightRemembers the size of your scratchpadLocal storageUntil cleared
recentSearchesLists your recent searchesLocal storageUntil you sign out
focused_*Remember your filters for the Focused feedLocal storageUntil you sign out
daily_challenge_dismissedRemembers that you hid today’s challengeLocal storageUntil you sign out
seen_custom_subline_idRemembers which dashboard announcement you have already seenLocal storageUntil you sign out
lumin_company_verif_stateKeeps a company verification in progress if you reload the pageLocal storageUntil it completes, or you sign out
decoder_sound, decoder_motion, decoder_hard, decoder_trainingRemember your Decoder settingsLocal storageUntil cleared
decoder_liveRemembers your Decoder record for its start screenLocal storageUntil you sign out
decoder_training_stateSaves a Decoder Training game in progressLocal storageUntil you sign out
lumin-pending-updateRemembers that an app update is ready to installLocal storageUntil the update is installed
feed_mode, feed_scroll_*, feed_offset_*, pscroll_*Keep your place on the feed and other pages as you move aroundSession storageUntil you close the tab or app
mp_cache, mp_cache_at, news_cache, econ_cacheHold recent market prices, headlines and the economic calendar briefly, so they load quicklySession storageUntil you close the tab or app
lumin_transition_carryover, sw-updatingSmooth the screen change after signing in or updating the appSession storageUntil you close the tab or app

4c. Analytics cookies

We don't currently use analytics cookies, or any analytics tool that stores information on your device.

4d. Advertising cookies

We don't currently use advertising cookies. Promoted posts and ads on Lumin are shown without them.

5Third-party services and international data transfers

No third-party cookies are set on the Site. We do use the services below to run Lumin. Some of them process data outside the United Kingdom, including in the United States. Where this occurs, appropriate safeguards are in place (such as Standard Contractual Clauses or the service provider's participation in recognised data protection frameworks).

Third-party services we use include:

  • Google Places & Gemini (location autocomplete and AI-generated recaps). See Google's Privacy Policy
  • Stripe (payment processing and creator subscriptions). See Stripe's Privacy Policy
  • Postmark (email delivery). See Postmark's Privacy Policy
  • Finnhub (market data). See Finnhub's Terms of Service
  • Didit (identity verification). See Didit's Privacy Policy
  • Ecologi (environmental impact tracking). See Ecologi's Privacy Policy

When you leave Lumin to pay with Stripe or to verify your identity with Didit, those sites set their own cookies under their own policies.

6Managing your cookie preferences

You can change your advertising choice at any time through Settings > Cookie preferences in the Lumin app. Strictly necessary and functional items are always on. Signing out removes the personal items listed in section 4, and you can view or delete the rest through your browser settings. Most web browsers allow you to:

  • View what cookies are stored on your device
  • Block cookies altogether
  • Block cookies from specific websites
  • Delete cookies upon closing your browser
  • Set preferences for different types of cookies (e.g., third-party vs. first-party)

If you block or delete them, you will be signed out, and drafts and settings saved on that device will be lost.

For more general information on cookies and how to manage them, visit allaboutcookies.org or youronlinechoices.com/uk.

7Your rights

Under the UK GDPR, you have the right to:

  • Access the personal data we hold about you
  • Request correction of inaccurate data
  • Request deletion of your data
  • Withdraw consent at any time (without affecting the lawfulness of processing before withdrawal)
  • Lodge a complaint with the Information Commissioner's Office (ICO) at ico.org.uk

8Changes to this Cookie Policy

We may update this Cookie Policy from time to time. We will notify users of significant changes by updating the "Last updated" date at the top of this policy and, where appropriate, provide additional notice.

9Contact us

If you have questions about our use of cookies or this policy, email us at privacy@lumin.pro.

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© 2026 Lumin Pro Ltd lumin.pro

Lumin is a platform for user-generated content. No content on the platform constitutes financial advice, an investment recommendation, or an offer to buy or sell any financial instrument. You are solely responsible for any decisions made based on content posted by users or third parties. We strongly recommend consulting an FCA-authorised financial adviser before making any investment, trading, or financial decision. All investments carry risk, including loss of capital. See our Terms for full details. Lumin Pro Ltd is registered in England and Wales, company number 16523542. Registered office: 66 Paul Street, London, EC2A 4NA.

We value your privacy

By clicking “Accept all cookies”, you agree to the storing of cookies on your device to enhance site navigation, analyse site usage, and assist in our marketing efforts. You may click the customise button to personalise the types of cookies you would like to allow.

Strictly necessary Always on

Essential for the site to function: authentication, session security, and cookie consent itself. These cannot be turned off.

Functional Always on

Remember drafts, preferences, and settings across sessions so the platform behaves the way you expect.

Advertising

Personalise ads shown across the platform and measure their effectiveness. Off by default.

Lumin uses cookies to keep you signed in, remember your preferences, and understand how the platform is used. Some cookies are strictly necessary for the site to function. Others are optional and only run with your consent.

Cookie data on its own doesn't usually identify you, but combined with other information it can. Because we take your privacy seriously as a financial platform, you can choose exactly which categories run. Use the toggles under Cookie settings to change your defaults at any time.

Blocking some categories may affect parts of the platform (for example, staying logged in or remembering drafts). For the full breakdown of what each cookie does and how long it's kept, see our Privacy Policy and Cookie Policy.