# Construction Time Tracking — NFC, GPS & Selfie Clock-In | IronClock

> 4 ways to clock in on construction sites: NFC Smart Tags, GPS geofencing, mobile app with selfie verification, and web dashboard. Every punch verified with GPS + photo. Eliminates buddy punching and time theft.

Source: https://ironclock.app/features/time-tracking

## 4 Ways to Clock In. One Source of Truth.

IronClock is the construction time tracking app with four verified ways to clock in — Smart Tags, GPS geofencing, mobile app with selfie, and web dashboard. Every punch carries GPS coordinates and photo proof, so buddy punching and time theft stop at the gate.

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34.0522°N 118.24°W

TAG-04A

PPEDOCSORIENT.

VERIFIED

### Clock-In Methods Built for Job Sites

No two sites are the same. Pick the clock-in method that fits each one — or run all four.

#### IronClock Smart Tags (NFC)

Mount a small IronClock Smart Tag at your site entrance, gate, or trailer. Crew members tap their phone on the tag to clock in — faster than opening an app. GPS coordinates are captured automatically. No special hardware, no kiosks, no tablets.

#### GPS Geofence

Set a geofence around each job site. Crew members automatically clock in when they cross the boundary and clock out when they leave. Configurable radius. Works passively — no action required from the crew member.

#### Mobile App with Selfie Verification

Crew members open the IronClock app (iOS/Android) and clock in with a selfie. The photo and GPS coordinates are captured, creating a verified audit trail. Supervisors can review any punch photo.

#### Web Dashboard

Supervisors and admins manage time entries, clock crew members in and out, and fix exceptions from any web browser. Full oversight without being on site.

### Smart Automation That Keeps Data Honest

Automatic rules and built-in verification keep your time data accurate — without extra work for the crew or the office.

#### Auto Clock-Out

Configurable rules automatically end shifts after set hours (default 11 hours) with optional lunch deductions for long shifts.

#### Selfie + GPS Verification

Every punch is verified with a photo and GPS coordinates. Buddy punching is impossible when every clock-in requires physical presence and a selfie.

#### Missed Clock-Out Alerts

Supervisors get an alert the moment a crew member misses their clock-out — so you stop chasing people down for time corrections.

#### Complete Audit Trail

Every clock-in, clock-out, edit, and override is logged with timestamps, user info, and IP addresses. Holds up under audit.

### Stop Losing Money to Time Theft

The American Payroll Association reports 1.5–5% of gross payroll is lost to time theft. Start with a free 60-day pilot — we set up your sites, tags, and crew, and you see your first clean payroll run before you pay.

[Book a Free Demo](https://ironclock.app/contact-sales) [Compare IronClock](https://ironclock.app/compare)

## Frequently asked questions

### Which clock-in methods does IronClock support?

Four: an NFC Smart Tag tap at the site entrance, automatic GPS geofence clock-in/out, the mobile app with a selfie photo, and the web dashboard. Every punch is stamped with GPS coordinates and a timestamp, whichever method the crew uses.

### How does IronClock prevent buddy punching?

Every clock-in carries verification a coworker can't fake for you: a selfie photo captured at the punch, GPS coordinates placing the worker on site, and optionally a physical NFC Smart Tag tap at the gate. Suspicious punches — off-site GPS, missing photos — are flagged for supervisor review.

### Does IronClock work across multiple job sites?

Yes. Every plan includes unlimited job sites, each with its own geofence, Smart Tags, and rules. Crew members moving between sites are tracked per site, and hours roll up by site and project for job costing.

### What happens if a worker forgets to clock out?

IronClock flags missed clock-outs and can clock workers out automatically — on a schedule or when they leave the site's GPS geofence. Supervisors see flagged entries before approval, so a forgotten punch becomes a one-click fix instead of a payroll dispute.

## Capabilities

- NFC Smart Tag tap clock-in
- GPS geofence auto clock-in/out
- Mobile app with selfie verification
- Web dashboard clock-in
- Auto clock-out rules
- Missed clock-out alerts
- Complete audit trail with GPS + photo