Axel Hoehnke
NFC Field Service Monitoring

84Watchdog

Your field assets already exist. Most of them have no digital identity. The question is not whether to fix that—it is which assets, which teams, and what data goes untracked today.

// service_log.live ◉ SYNCING
FP-1043 · City Hall Flagpole GPS ✓
FP-0821 · Main Entrance LOGGED
FP-0334 · Fire Exit Panel ALERT
FP-1102 · Rooftop Unit OVERDUE
FP-0517 · Loading Bay REPORT ✓
FP-0088 · West Wing LIVE
24Assets Tagged
6Logged Today
1Alert Open
01

No Asset Identity

Paper service records are filed, lost, or never created. Field assets exist physically but have no persistent digital record. History cannot be retrieved on demand.

02

Compliance Gaps

Inspection intervals and maintenance obligations are tracked manually—if at all. Missed deadlines go undetected until an audit or incident forces the issue.

03

No Presence Proof

Service reports can be submitted remotely. Without GPS-verified on-site logging, there is no tamper-evident confirmation that a technician was physically present.

04

Documentation Lag

Notes written hours after a job introduce errors and omissions. Customer reports take days to produce manually—creating trust gaps at the point of invoicing.

05

Reactive Maintenance

Without trend analysis across service history, maintenance is reactive. Failures surprise instead of being predicted. Replacement costs exceed prevention costs.

06

Single-Method Fragility

NFC-only systems fail when a chip is damaged or a device lacks NFC support. A single physical read method is a single point of failure in the field.

Five-Step
Service Process

A structured, mobile-first workflow triggered by a single tap. No app install. No manual data entry. No paperwork.

ST 01

Tag the Asset

Attach a single weatherproof label to any field asset. The label carries both an NFC chip (NTAG216, write-locked) and a QR code at error correction level H. One label, two independent read methods — readable by any phone, in any conditions, with no app required.

NFC NTAG216QR Level HIP67 Label
ST 02

Tap or Scan

Technician taps the NFC tag or opens the phone camera to scan the QR code. Both methods resolve to the same URL — the asset's service record loads instantly in the mobile browser. No credentials saved on the tag. No sensitive data at risk if the label is copied.

NFC TapQR ScanNo App Install
ST 03

GPS Auto-Verification

The browser captures GPS coordinates via the Geolocation API on page load. The server calculates the Haversine distance between the submission and the asset's registered location. Logs outside a configurable threshold are flagged for review — creating a tamper-evident on-site audit trail without blocking legitimate work in areas with GPS drift.

Geolocation APIHaversine CheckProximity Threshold
ST 04

Log by Voice & Photo

Inspection checkboxes cover rope condition, lighting status, and structural integrity. The notes field supports voice dictation via the Web Speech API — technicians speak observations hands-free while on a ladder or in gloves. Transcription appears in real time and can be edited before submission. iOS Safari routes audio to OpenAI Whisper as a fallback. A photo upload completes the evidence record.

Web Speech APIWhisper FallbackPhoto Upload
ST 05

AI Report & Maintenance Alerts

On submission the server triggers two processes in parallel. GPT-4o converts the raw inspection data into a professional, customer-ready service report (200–300 words, three structured sections) at a cost of under €0.002 per report. A rules engine evaluates the updated service history against five maintenance thresholds — overdue inspection, rope replacement, wear patterns, lighting failures, and inactivity — and dispatches email or SMS alerts for any triggered rule.

GPT-4oRules EngineEmail / SMS Alert

What the Platform
Delivers

Six integrated capabilities that transform a physical asset into a digitally accountable, continuously monitored infrastructure node.

Dual NFC + QR Asset Tags

One weatherproof label per asset. NFC chip write-locked after provisioning. QR at H-level error correction for outdoor durability. Redundant read paths eliminate single points of failure in the field.

GPS Auto-Verification

Location captured automatically at form load. Haversine proximity check runs server-side. Every service log carries a verified or flagged GPS record — a tamper-evident audit trail requiring no technician input.

Voice-to-Text Notes

Web Speech API transcribes dictated notes in real time. OpenAI Whisper serves as an automatic iOS Safari fallback. Technicians document observations hands-free in the field, with no keyboard required.

AI-Generated Service Reports

GPT-4o produces a structured, customer-ready service report on every submission. Three sections: executive summary, findings, and recommended actions. Deliverable within seconds. Emailable directly from the confirmation screen.

Predictive Maintenance Alerts

Five configurable rules evaluate every submitted log against service history. Alerts fire by email or SMS before failures occur — shifting operations from reactive repair to scheduled prevention with a full audit trail.

Real-Time Cloud Sync & Dashboard

All logs, photos, GPS records, and AI reports sync instantly. The admin dashboard surfaces open alerts by severity, recent service activity, and per-customer report history — accessible from any browser, anywhere.

Digitise the Asset,
Not Just the Order

Most field service companies digitise work orders. Very few digitise the asset itself. Attaching a tag to a physical object and linking it to a cloud service record transforms that object from a maintenance cost into a data-generating infrastructure node—with history, compliance evidence, and predictive signals built in from day one.
— 84Watchdog platform principle · Axel Hoehnke Consulting

The deeper question is not simply which assets to tag—but what decision-making, compliance posture, and customer trust become possible once every asset has a verifiable digital identity.

Right-Sized
For Field Operations

84Watchdog is built for operations teams under documentation and compliance pressure — not for organisations seeking to build enterprise software from scratch.

Field Service Managers

  • Need tamper-evident proof of on-site service visits
  • Spend hours each week producing customer service reports manually
  • Rely on paper logs with no searchable history per asset
  • Want to predict maintenance needs before failures cost money

Compliance & Safety Teams

  • Required to demonstrate inspection intervals to auditors
  • Operate in fire safety, medical facility, or construction environments
  • Need GPS-verified service records for regulatory defensibility
  • Want structured, timestamped evidence — not spreadsheets

Operations Directors

  • Multiple sites with no unified asset service visibility
  • Customer relationships depend on demonstrable accountability
  • Ready to move beyond paper but need rapid, practical deployment
  • Want measurable ROI from digitisation within weeks, not months

Built for Regulated
Field Environments

Wherever compliance, traceability, and service history matter, 84Watchdog turns physical assets into digitally accountable infrastructure.

Fire Safety
Tamper-evident inspection logs for extinguishers, suppression systems, and emergency lighting with alert-driven compliance intervals.
Facility Maintenance
Asset lifecycle tracking across multi-site portfolios. GPS-verified service visits, predictive alerts, and customer-ready AI reports on every job.
Construction
Equipment inspection records, handover documentation, and site safety compliance — all tied to the physical asset, not a paper folder.
Public Infrastructure
Flagpoles, street furniture, signage, and municipal assets tagged and monitored with automated maintenance scheduling and audit trails.
Healthcare Facilities
Medical device and equipment inspection records meeting MDR and ISO 13485 traceability expectations, without bespoke software investment.

Transform Your
Field Operations

Contact us today to test 84Watchdog first-hand. The platform is deployable within hours on Replit — no infrastructure procurement, no long onboarding. A 30-minute call is sufficient to determine fit.

Book a Scoping Call meet@axelhoehnke.com
Our Services
Quick Wins NIS2 Readiness Check CRA Scope Assessment Board Risk Briefing Regulatory Radar NIS2 Implementation CRA Compliance Programme Incident Response Plan Supply Chain Risk Virtual CISO Retainer NIS2 Audit Support CRA Technical File 84Watchdog Shadow AI