Weather-Stamped Site Diary: A Digital Routine
Build a digital construction site diary with weather-stamped photos: why weather matters for delays, concrete curing and claims, plus a daily routine.
Blog
Know-how for field teams
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How to Write a Photo Attendance Policy Staff Accept
Write a photo attendance policy on notice and consent, data captured, retention, appeals and corrections, with Vietnam's data protection rules in mind.
Design a Photo Stamp Template for Your Team
How to design a photo stamp template for a team: what to show or hide, readability on any background, privacy, and one required company template.
Attendance Methods Compared: Paper, Biometric, GPS
Paper and Excel, fingerprint and face terminals, Wi-Fi check-in and GPS photo clock-in compared on cost, field-team fit, fraud risk and biometric privacy.
Timestamp Photos vs Verifiable Photos: The Difference
A date stamp on a photo can be redrawn in any editor. See how verifiable photos link each image to a server record anyone can check, and when to use them.
How to Choose a GPS Camera App for Your Business
A 10-point checklist for choosing a GPS timestamp camera app: trusted time, fake GPS checks, verification, offline mode, a scoring sheet and pilot plan.
Detect Edited Photos with a SHA-256 Fingerprint
SHA-256 in plain language: what a match proves, what a mismatch means, why photos sent via WhatsApp or Messenger never match, how to compare files.
Trusted Time vs Phone Time: How Photo Timestamps Get Faked
How photo timestamps get faked (phone clock, EXIF edits, re-stamping) and how server-synced time plus a monotonic clock helps, with honest limits.
QR Photo Verification: How Recipients Check a Photo
How QR photo verification works for recipients: what the page shows, why the area is rounded, what integrity flags mean and how to compare files.