HACCP without paper: how IoT automates food-safety logging

Every professional kitchen has a binder of temperature sheets filled in by hand — often hastily, sometimes after the fact, always with effort. HACCP requires the records; it does not require a pen.

What HACCP actually requires

A HACCP system calls for documented monitoring of critical control points — most commonly fridge and freezer temperatures: regular measurements, an archive, and documented corrective action when something drifts. Nowhere is the medium specified. Digital logging is fully acceptable — and in practice more trustworthy, because it can’t be forgotten or “reconstructed” later.

How the automated setup works

The architecture is simpler than it sounds:

1. Sensors in each fridge and freezer measure temperature at regular intervals — every minute if needed.
2. A local hub collects readings and sends them to the cloud. During an internet outage it buffers locally and syncs afterwards.
3. The platform keeps the history, produces inspection-ready records, and — most critically — alerts immediately when a temperature leaves its range: SMS or push the moment it happens, not next shift.

What the kitchen gains

• Staff time: no handwritten logs, no thermometer rounds.
• Stock protection: a fridge failing on Saturday night is discovered in minutes, not on Monday — with a full cold room’s worth of stock at stake.
• Inspection readiness: a complete, tamper-proof history in one click, instead of a binder with gaps.

The cost, honestly

An installation of 5–10 measurement points with alerts is today an investment of a few hundred euros in hardware, plus a platform subscription. It typically pays for itself with the first incident it catches — one failed cold room full of stock costs more than the entire system.

At Kronn we’ve solved this in production kitchens through Makker, and we design IoT solutions as standalone installations too — from sensor to dashboard.