Trust

What a stranger can see

Scanning a sticker needs no account, because the moment this product matters most is the moment nobody can log in. That means each page is readable by anyone holding a phone — so here is the whole of it.

Shown

Only these, and only when the building’s owner has left the emergency page switched on.

  • Where the shutoffs are

    Water, gas, and what each one isolates. This is the question the product exists to answer.

  • Where the electrical panels are, and what the breakers do

    The second question people ask in a hurry, and the one that otherwise needs somebody to guess and flip.

  • Fire extinguishers and emergency equipment

    Useful to the person who needs one, and to the crew that turns up.

  • The name of whoever serviced the building last, and the date

    The name and the date only — never what was found, never what it cost, never the notes. Those belong to the contractor.

  • A label for the building, if one was set

    “The Miller house” or “Building C”. It tells the reader they are in the right place without telling a stranger where that is.

Never shown, at any setting

These are not defaults that can be turned on. They are refused by the software, and a building owner cannot opt into publishing them even if they want to.

  • The alarm panel, the monitoring company, or where the safe is

    Publishing this to anyone with a phone is a burglary aid. Every security asset carries a permanent flag that overrides any site setting.

  • Gate codes, lock box codes, or where a key is kept

    Same reason. There is no configuration in which these appear.

  • The owner's name, phone number or email

    The scan answers a question about the building, not about who lives in it.

  • Anything that says when the building is empty

    “Suspend lawn service Nov 1–15” is a sentence that tells a stranger the house is unoccupied for a fortnight.

  • Camera and recorder locations

    Knowing where the cameras are is most useful to the person who would rather not be on them.

  • Anything about money

    Pricing, invoices and what a repair cost are between the owner and the contractor.

Three more rules

The address is never on the page

The person reading it is standing in the building. Printing the address would turn a photographed sticker — or one on a mower stolen out of a garage — into an address lookup. If something turns up where it should not be, there is a report found link that tells the owner without showing either party the other’s details.

Codes cannot be guessed or walked

Every code is sixteen random characters, generated from a cryptographic source and only then assigned to a print batch. Stickers are printed in runs, but the codes on them are not in any order — so there is no “next” property to visit.

A business starts with the page off

Homes default to on, because the emergency answer is the point. Commercial sites default to off and switch it on deliberately. There is a real argument for a hotel or a plant switching it on — a fire crew arriving wants the gas shutoff immediately, which is a better version of what a Knox box does — but that is the operator’s call, not ours.

How the rest of it works