# Read Proof: How Digital SDS Confirmations Protect Your Company
OSHA's HazCom standard (29 CFR 1926.59) requires that employees understand the hazards of chemicals they work with. But how do you prove understanding? Paper sign-in sheets prove attendance—not comprehension. And they get lost, damaged, or filed incorrectly.
HazComFast's Read Proof system creates timestamped, verified evidence that every worker accessed and acknowledged specific safety data sheets.
What Is Read Proof?
Read Proof is a digital confirmation workflow that:
1. Assigns SDSs to workers based on their jobsite and role
2. Tracks when each SDS is opened with timestamp and duration
3. Requires acknowledgment — the worker taps "I have read and understand this SDS"
4. Captures a digital signature on the device
5. Stores everything in a tamper-proof audit log
Why Paper Sign-In Sheets Fail
| Factor | Paper Sign-In | HazComFast Read Proof |
|--------|--------------|----------------------|
| Proves SDS was accessed | No | Yes (timestamped log) |
| Proves which SDS | Rarely | Yes (linked to specific chemical) |
| Survives water/damage | No | Yes (cloud + offline sync) |
| Searchable | No | Yes (by worker, date, chemical) |
| OSHA inspection ready | Minutes to find | Seconds |
How It Works on the Jobsite
Step 1: Safety Manager Assigns SDSs
When a new chemical arrives on site, the safety manager adds it to the jobsite inventory. HazComFast automatically flags all workers on that site who need to review the SDS.
Step 2: Workers Receive Notifications
Each worker gets a push notification: "New SDS requires your review: Portland Cement Type I/II." They open the app (works offline) and read the SDS.
Step 3: Confirmation & Signature
After reviewing the SDS, the worker:
#