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How it works

Read at home.Sealed at home.Opened by family.

Four steps, and only one of them touches the internet. The interesting design decision is what is missing: there is nowhere in this diagram that video is stored.

A silhouette standing in a bright doorway at the end of a dark hall

The architecture

How Hoyfo works.

Four steps, and only one of them touches the internet. The interesting design decision is what is missing: there is no place in this diagram where video is stored.

Inside the house

  • Gate camera
  • Front door contact
  • Hall motion
  • Smoke alarm

Step 01

Cameras & sensors

Whatever the house already has — CCTV at the gate, a contact on the front door, the smoke alarm in the kitchen, a motion sensor in the hall. Nothing new is mounted, nothing is rewired.

Step 02

Hoyfo Hub

A small box beside the recorder reads the streams and the sensor traffic locally, and turns both into short, plain sentences. Frames are discarded as they are read.

Outside

Sealed envelope

AES-256-GCM

Step 03

Encrypted mailbox

Sealed envelopes are posted to Guardian Cloud, which can route them but cannot open them. No video is ever uploaded.

Hoyfo

Medicine delivered at 11:20 am.

Step 04

Family

Your phone holds the keys. The envelope opens on your device and becomes a line you can read in four seconds.

No frame of video crosses the sealed line.

Setup

An afternoon, and then you stop thinking about it.

  1. Step 01

    Plug the Hub in

    Beside the recorder, on the same network. It finds the cameras and the sensors by itself and shows you a list.

    10 minutes

  2. Step 02

    Choose what it may look at

    Tick the rooms. Set the quiet hours. Everything unticked is never read — this is a filter at the source, not a preference in a settings screen.

    15 minutes

  3. Step 03

    Add the family

    Each person scans a code. Their phone generates its half of the key pair on device. Nothing sensitive passes through us.

    2 minutes each

  4. Step 04

    Let it watch a fortnight

    The Hub learns the household's rhythm before it starts calling anything unusual. You will get daily lines from day one and useful judgement from week three.

    14 days

A day, end to end

Nothing happened today. That's the update.

Tuesday at a house in Thrissur, as a family in three cities received it. Four parts of a day, each one a sentence you can read in four seconds.

  1. A glass of chai on a table, lit from behindMorning05:00 — 11:00

    The kitchen light came on at 6:10.

    Ten minutes earlier than usual, which is how you know it is a good day. Tea on the veranda by half past. The gate opened once, for the milk.

    • Kitchen light — 6:10
    • Veranda, tea — 6:34
    • Gate opened — 6:52
  2. Weathered hands holding a bunch of carrots against a red wallAfternoon11:00 — 16:00

    Medicines came to the door at 11:20.

    The chemist's boy, the same one as always. Lunch a little late. The house is quiet between two and four, the way it has been every day this month.

    • Delivery received — 11:20
    • Kitchen active — 13:05
    • Quiet hours — 14:00
  3. Two people walking home together down a lit street at nightEvening16:00 — 21:00

    Dad returned home at 6:40.

    Back from the walk he has taken since he retired. Two neighbours at the gate for a while. Lights on across the front of the house by seven.

    • Gate — 6:40 pm
    • Visitors at gate — 6:44 pm
    • Front lights — 7:02 pm
  4. One lit window in an otherwise dark building at nightNight21:00 — 05:00

    The house settled at 10:15.

    Doors checked, lights down, nothing moving after quarter past ten. Hoyfo rests until morning. Nothing is read, nothing is recorded, nothing is sent.

    • Doors closed — 10:09 pm
    • House settled — 10:15 pm
    • Hoyfo resting — 10:30 pm

Compatibility

Works with the cameras and sensors you already own.

Most homes with older parents in them are already instrumented — CCTV at the gate, a contact on the front door, a smoke alarm in the kitchen. Nothing new goes on the wall, and the recorder keeps doing exactly what it does now.

Check your model
A security camera on a wall against an open sky
Cameras
CP Plus, Hikvision, Dahua, UNV, TVTand anything that exposes an ONVIF profile or a plain RTSP URL.
Protocols
  • ONVIF
  • RTSP
  • Zigbee
  • Z-Wave
  • Matter
  • MQTT
  • Bluetooth LE
Sensors
  • Door contacts

    Gate and front door, opened and closed

  • Window sensors

    Left open after dark

  • Smoke & heat

    Alarm state, battery, last self-test

  • Motion (PIR)

    Rooms waking and settling

  • Gas & LPG

    Kitchen leak detection

  • Water leak

    Bathroom and utility

  • Temperature

    Heat that an older body shouldn't sit in

  • Smart plugs

    The kettle, the geyser, the fan

No cameras at all? Hoyfo runs on sensors alone. You lose the snapshots and keep everything else.

Ask about your setup