Privacy notice
Updated: 11 October 2026
Accounts and sign-in
LamjinLab uses Supabase for accounts. Email registration provides an email, display name and password directly to Supabase; the website VPS does not store passwords. When an enabled Google or Microsoft sign-in is used, we receive an account identifier, email and basic profile information such as name and avatar to identify your account and associate private cases. We do not request access to your mail, contacts or drive files.
Private cases
Case titles, notes and selected tool results are uploaded to Supabase only when you choose Save. Ziwei cases include birth date, time and chart inputs. Other ordinary users cannot read your records. Authorized maintainers may access relevant data when handling your request, operational faults or security incidents. Avoid unnecessary identifying information and obtain consent before recording another person’s data.
Providers and locations
The website uses Cloudflare and a US VPS. Supabase stores accounts and cases in the western United States. Resend processes recipient addresses and message content to deliver account verification and password recovery emails. Sign-in providers process authorization under their own privacy policies. Data may be processed outside your location.
Browser storage and statistics
Your browser stores login sessions, language and theme preferences; some chart tools remember inputs locally. Public pages use Google Analytics and other visit statistics; account and private-case list pages do not load those analytics scripts. The site-wide counter uses Upstash to process IP addresses and estimate visitors. Infrastructure may record IP addresses, request times and browser information for operations and security.
Google advertising
LamjinLab integrates Google AdSense on selected public articles, editorial lists, the YouTube playlist tool and traditional tools other than I Ching: Bazi, Ziwei, Mei Hua, Xiao Liu Ren, Tarot, Auspicious Date, Nameology, Numerology, Wong Tai Sin and Guan Di fortune sticks. When ads are enabled, Google and other third-party advertising partners may use cookies, local storage, web beacons, IP addresses, device and browser information, pages visited and ad interactions to deliver ads, measure performance and prevent invalid traffic. Google and its partners may personalize ads based on previous visits to this site or other websites. We do not intentionally send account details, private cases, birth information, tool inputs, case titles or notes as advertising request parameters or targeting data. Advertising scripts run on these public tool pages and process advertising-related data under Google's policies and your consent choices.
Advertising and consent choices
Where consent is legally required, the enabled advertising feature uses a Google consent dialog to collect your choices. You can decline or manage optional purposes. Once the site is approved and the applicable consent message is displayed, you can reopen the dialog through Google's Privacy and cookie settings link at the bottom of an advertising page. You can also manage ad personalization through Google Ads Settings below. Our AdSense advertising and advertising consent-message scripts do not load on the homepage, I Ching, privacy notice, account, My cases or search pages, or links containing private-case identifiers or authorization credentials. Ad delivery depends on Google's site review, ad configuration and your consent choices.
Use and retention
Sign-in data supports account access; private cases support saving, restoring and exporting. We do not sell these data or use them for personalized advertising or AI training. Records are generally retained until you delete them or request account closure. Operational logs and provider copies follow their retention mechanisms; deletion may not immediately remove historical backups. Free services may pause, so download personal copies periodically.
Access, export and deletion
My cases lets you view records, edit notes, export JSON or delete cases. To correct account information, close an account or ask a privacy question, contact the email below; we must verify account ownership before processing the request. Revoking Google or Microsoft access does not automatically delete saved cases. Material changes in data use will be disclosed before use and consent requested when needed.