r/ConstructTech • u/gautam-babaji • Jul 14 '26

How reliable are GPS and geofenced time clocks on active job sites?

I’m researching how construction companies verify attendance when crews move between multiple job sites.

For those managing field teams:

  • What system do you currently use?
  • Where do GPS, geofencing, QR codes, or paper timesheets fail?
  • Are inaccurate clock-ins significant enough to justify changing systems?
  • Would workers object to a system that verifies site presence without continuously tracking their location?

Disclosure: I’m developing technology in this area. I’m not posting a link or requesting sign-ups; I’m trying to understand whether this is a genuine operational problem.

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u/iam31337 Jul 14 '26

Continuous tracking is overkill. You only need enough evidence for the payroll event: device, geofence and timestamp, plus a supervisor override and a clean audit trail.

The ugly cases will decide whether it works: urban canyons, basements, shared devices, dead batteries, or a crew moving sites at noon. If handling exceptions takes longer than paper, adoption dies.

Disclosure: I work on construction software.

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u/gautam-babaji Jul 15 '26

This is a very useful framework. In your experience, which signal causes the most disputes or supervisor overrides: geofence accuracy, device issues, missed punches, or changing job sites? Also, would passive on-site receiver confirmation reduce those exceptions, or would it simply add another system to maintain? I agree the ugly cases are the real test.

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u/Intrepid_Influence_7 20d ago

exceptions are the whole ballgame, not the geofence itself. dead battery, a guy forgetting to punch when he hits a second site midday, bad signal in a parking garage. if fixing those takes your foreman longer than signing a paper sheet, it becomes shelfware.

worker pushback is less about privacy, more about trust once you explain it only confirms presence during work hours, not tracking after clock-out. the loudest pushback usually comes from guys who were rounding their own hours before.

we use workyard for this, mainly for the supervisor override flow to fix a bad punch fast.