24 ways people put an eternal QR to work.

Owners flip the QR between a private placeholder and a public 'lost pet' page from the EQR panel. A scan sends an alert email to the address on the code and fires a signed webhook carrying the time and the country the tag was scanned from — wire that webhook into your own SMS gateway if you want a text. No tracker hardware, no battery to charge.

• Personal data hidden by default — visible only when the owner unlocks the QR.
• The owner hears about the scan from an alert email, not from a phone call they never got.
• No app for the finder to install — just a phone camera.

You supply one contact page per language; the resolver reads the browser locale and the country the scan came from and serves the matching one, falling back to your default when neither is on your list. Swap your hotel, phone number, or trip status from the EQR panel and the printed sticker keeps working.

• Lost luggage gets returned across the language barrier.
• Contacts editable mid-trip — no need to reprint or re-mail anything.
• Single tag covers every country you travel through.

One QR, two audiences. A courier scan lands on the public 'I'm at your door' page and fires a signed webhook the moment it resolves. Friends with the PIN pass the unlock gate to a private page with the guest Wi-Fi, parking note, or key-safe combination — the private URL is never returned to a phone that has not answered the prompt.

• A doorbell-grade workflow with no wiring or hardware install.
• Friends get hospitality info, strangers don't.

Time routing flips the destination by hour of day. From 08:00–22:00 the QR opens a call link; after 22:00 it routes to a Telegram thread instead. Either way the scan webhook reaches you quietly, and your number never appears on the sticker.

• Contact without ever showing your phone number to passers-by.
• Right channel for the time of day, automatically.

OS routing picks the right destination per device. A 10-scan limit caps how far one printed batch travels: once it is used up the code stops resolving and shows the EQR limit notice instead of your contact page. Every scan that does resolve fires a webhook, and a scan-alert email tells you the CV is being read.

• A hard ceiling on how many times a printed CV can be opened at all.
• Recruiter interest tracked, scan by scan.

Hour-of-day slots do the work: 08:00–12:00 serves the breakfast PDF, 12:00–16:00 the lunch combos, 16:00–22:00 the dessert and evening-class menu. Slots are evaluated in UTC, so set the hours against your own offset. A price edit in the EQR panel is live for the next scan; the printed sticker never changes.

• Kitchen load smoothed — guests see the menu the kitchen is ready to cook.
• Business-lunch guests see the lunch menu at lunchtime, not the breakfast PDF.
• The printed sticker never changes when the prices do.

You set the password in the panel and change it each day, handing the new one to guests over Telegram. The 40-scan limit does the capacity control on its own: once 40 people have passed the gate the code stops resolving for everybody, so nobody has to stand at the door counting.

• Exclusivity preserved without a paid doorman.
• Hard capacity cap enforced at the QR level.

Browser locale and the scan's country route tourists to the price card you published in their language; Greek-speaking customers stay on the local list. Replace a price card from the owner's phone and every scan after that gets the new one.

• Fewer price questions from tourists — the list is already in their language.
• No need to print menus in five languages.

Chains print one QR everywhere. Geo routing matches the country the scan came from to a destination — Greece to the Greek site, Cyprus to the Cypriot one, everyone else to the fallback. Routing works at country level, not street level, so this is a market splitter rather than a branch finder. Workspaces isolate edit access, so a Thessaloniki manager can't touch the Athens menu.

• One marketing creative, one destination per market.
• Orders land on the site for the country the scan came from.

Moving the setup video off YouTube? Change the link once — every box already in customers' hands points to the new destination. Geo + OS routing layer on automatically: German shoppers get the German video, iPhone owners go straight to the App Store, the rest get the international web fallback.

• The printed code never dead-ends — you repoint it instead of reprinting the box.
• Fewer setup tickets — buyers get the instructions in their own language.
• Seasonal accessory offers reach boxes that are already on the shelf.

Counterfeit producers clone the printed QR, and a clone spends the same code the genuine buyer has. Give every unit a code with a three-check limit: honest buyers verify, the clone's extra scans burn what is left, and from then on the code answers with EQR's limit notice — the tell that the label has been copied. Every check that resolves fires a signed webhook into the brand's security stack with the time, the country and the device class.

• Shoppers verify originals in one tap.
• Every check reaches brand security with the country and device class it came from.
• Grey-import channels mapped from the countries the checks arrive from.

A capture form sits in front of the destination. Scan #1 opens the registration fields you defined; on submit EQR stores the entry, remembers that browser, and sends the customer on. Later scans from the same phone skip the form and land on the account, history and accessory shop. Every entry is stamped with the code it came from and exports as CSV, so a card registered twice is visible in the log.

• Registration happens at unboxing — no postcards to mail.
• Each registration is tied to the code printed on that unit, so repeat claims show up in the export.

Three hour-of-day slots, three destinations: the day schedule, the after-midnight cocktail menu, and a 03:00–06:00 ride-home button. Slots are evaluated in UTC, so set them against the site's offset. A headliner shift is one edit in the panel — no wristband is reprinted and nothing has to be handed out again.

• No paper schedules — a moved set time reaches every wristband.
• A bar menu that only exists after midnight.

A capture form sits in front of the booth's destination: the first scan from a phone shows the fields the sponsor defined, and every submission is stored against that code for the sponsor to read or export as CSV from the panel. The form page is plain and light enough for a festival's choked cell network. Later scans from the same phone skip the form and go straight through to the sponsor's page, each one firing a scan webhook with its time and country.

• Booth entries collected on the visitor's own phone, with no booth hardware to rent.
• Feedback collected at the booth instead of a post-event email.
• Every submitted entry and every return scan is counted with its hour and its country, so the booth packs up with numbers instead of guesses.

EQR sends a HEAD request to the festival's schedule site on the interval set on the code and records every result. A failed check sends an alert email to the address on the code — EQR does not swap the destination by itself. The crew makes that call in the panel, repointing the band at a hyper-light text schedule hosted on content.eqr.link, light enough to open on a weak connection deep in a crowd.

• The crew hears about a dead schedule site from an alert, not from the queue.
• One edit moves every wristband onto the fallback — nothing is reprinted.

Hour-of-day routing follows the rota — Dr. Ivanov 09:00–15:00, Dr. Petrova 15:00–20:00, the out-of-hours number outside both windows. Slots are hours, not weekdays, so a different weekend rota is a panel edit rather than a rule. The same physical QR serves staff through a password-gated path into the room's CRM dashboard.

• No reprinting of door signs when the rota shifts.
• Staff get one-tap access to today's caseload from their phone.

One sticker, one destination the gym controls: the Google review link in the hour a class lets out, the timetable or a personal-training offer the rest of the day, set as hour-of-day slots. Scans are counted per code, an alert email goes to the front desk at the threshold the gym sets, and a webhook carries each scan into whatever the gym already runs.

• The review ask reaches members in the minutes after a class, not a week later by email.
• The offer on the sticker changes without a new sticker.
• The front desk can see, per code, how much the locker room actually scans.

EQR sends a HEAD request to the booking system on the interval set on the code — every 24 hours by default, more often if you configure it — and logs every result. A failed check emails the address on the code. The switch itself stays a human decision: one edit in the panel, and the next scan lands on a lightweight intake form whose submissions the practice reads and exports from the panel while IT fixes the main stack.

• The practice learns the booking system is down from an alert, not from a patient.
• One edit puts a working form in front of patients instead of an error page.

Lifecycle-aware: active sale → live broker. Sold → 'we have 5 similar' lead form. Out of hours → Calendly self-book. The €€ vinyl banner stays up; only the QR's destination changes.

• One banner covers the whole sales cycle instead of a reprint per stage.
• Leads keep arriving after the headline unit sells — the QR switches to similar listings.
• In business hours a scan reaches a live broker instead of voicemail.

Banner stays up for the whole build. The QR's destination flexes between live agent, online price-locked reservation, and a 3D walk-through across hour-of-day slots; a different weekend rota is a panel edit, because the slots are hours rather than days. Workspaces gate edits per development.

• Lead capture runs around the clock without paying for night staff.
• Optimal load balancing between agents and self-service.

Each brochure pack maps to a listing-level dynamic QR. Price moves, status flips, photos refresh — the brochure already in the prospect's hand updates with it.

• Brochures already handed out keep showing the live listing.
• No more calls about a price that changed last month.

An unlock interstitial at /unlock/:id stands between a walk-in scan and the wiki: the destination is checked against the PIN server-side and is simply not returned until the prompt is answered, so the internal URL never reaches an unauthorised phone. Configured as paid Eternal QRs, they log every destination change immutably to the EternalRegistry contract on Base; Basic codes keep the PIN gate but no on-chain log. Workspace roles split admins from read-only support engineers.

• A walk-in scan hits a PIN prompt, not the wiki.
• Bulk-update thousands of asset QRs when the wiki platform changes.
• On Eternal codes, an immutable, tamper-evident on-chain change log — usable evidence for your own audits.

Mid-voyage rerouting updates the customs documents at the QR layer — the container itself doesn't need a new label. Country routing serves the Dutch pack in Rotterdam and the Greek one in Piraeus. Each scan webhooks the time and the country it came from, so a battery-dead GPS tracker still leaves a country-level trail behind it.

• Inspectors read the customs pack in their own language, on the spot.
• Cuts demurrage risk when a force-majeure reroute changes the terminal.
• A country-level trail of where the box was scanned, for when GPS dies inside steel.

Each panel gets a uniquely tagged QR. EQR redirects at the edge while firing a structured webhook into the agency's measurement stack — CPA/CPC pricing on outdoor advertising finally becomes possible.

• Outdoor advertising sold on CPA/CPC, not a flat panel rate.
• Per-panel performance ranking for the next campaign.