Dat File Reader: Zkteco
: Best for real-time synchronization and complex reporting. ZKAccess 3.5 :
Is the device connected via or network (LAN) ? Extractor - ZKTeco Software
Some specialized websites allow you to upload the .dat file and convert it to Excel, although privacy should be considered. 3. Database Conversion (Access/SQL) zkteco dat file reader
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Using the SDK ensures that any firmware changes, custom encryption keys, or proprietary data compression choices made by ZKTeco are handled seamlessly. Troubleshooting Common Extraction Errors : Best for real-time synchronization and complex reporting
Ensure the dropdown is set to Tab or Space (depending on your device firmware).
import pandas as pd # Define the file path dat_file_path = "attlog.dat" excel_output_path = "attendance_report.xlsx" # Read the tab-separated or whitespace-separated file try: # ZKTeco logs often use single or multiple spaces/tabs as delimiters df = pd.read_csv(dat_file_path, sep=r'\s+', header=None, names=["User_ID", "Date", "Time", "Verify_Method", "Status", "Work_Code", "Device_ID"]) # Combine Date and Time columns if they split automatically if 'Time' in df.columns: df['Timestamp'] = df['Date'] + ' ' + df['Time'] df.drop(columns=['Date', 'Time'], inplace=True) # Reorder columns df = df[["User_ID", "Timestamp", "Verify_Method", "Status", "Work_Code", "Device_ID"]] # Map Status codes to readable text status_map = 0: "Check-In", 1: "Check-Out", 2: "Break-Out", 3: "Break-In" df['Status'] = df['Status'].map(status_map).fillna(df['Status']) # Export to Excel df.to_excel(excel_output_path, index=False) print(f"Success! File converted and saved to excel_output_path") except Exception as e: print(f"Error reading the file: e. Check if the file is binary or encrypted.") Use code with caution. Method 4: Utilizing the ZKTeco SDK (For Developers) If you share with third parties, their policies apply
How to Read, Extract, and Convert ZKTeco .DAT Attlog Files ZKTeco biometric attendance terminals store employee punch logs in a specific binary or text format, typically saved as an attlog.dat file. If you extract data from these devices via a USB flash drive, you cannot simply open this file in Excel or Notepad and read it clearly without understanding its structure.
Verify that the preview splits the User ID, Date, and Punch State into separate columns. Click . Step 3: Match IDs to Employee Names
Since these files are not in a direct human-readable format, you need specialized tools to parse them into Excel, CSV, or database formats. 1. Official ZKTeco Software (Extractor/SDK)
Navigate to (or User Management/Attendance Data). Select Download Attendance Data or Download User Data . Ensure encryption is turned off to make the file readable. Wait for the confirmation message: "Download Success".