How to Connect Door Access Control to Your Attendance System

The Problem with Running Two Separate Systems

Most businesses that have both an access control system and a time-tracking system are managing them independently. Employees badge into the building through one system and clock in through a separate terminal, app, or spreadsheet. The result: data lives in two places, discrepancies accumulate, and payroll processing involves manual reconciliation.

An employee badges into the building at 8:47 AM but forgets to clock in until 9:05 AM. Payroll sees a 9:05 start. The access log shows 8:47. Someone has to resolve the difference - or nobody does, and the employee is shorted 18 minutes every day for months.

What Integration Actually Means

Real integration means a single event - a credential presented at a door - simultaneously creates an access log entry and a time clock record. The employee does one action. The system records it in both contexts. There is no second terminal, no mobile clock-in, no manual step.

Step-by-Step: How to Connect the Two Systems

Step 1 - Audit Your Current Data Flows

Before touching any hardware or software, map what currently generates attendance records. Are employees clocking in through a web app? A dedicated terminal? Understanding the current flow tells you what you are replacing and where the integration point needs to live.

Step 2 - Identify Your Trigger Points

Decide which door events should create attendance records. Typically this is the main entry door and any secondary entry doors employees regularly use. Not every internal door should generate a clock-in event - a server room badge-in should not create a payroll record.

Step 3 - Align Employee Records

The integration requires a single source of truth for employee identity. Each person needs one record that exists in both the access system and the attendance system. This step is where most integrations encounter their first real problem: mismatched IDs, duplicate records, and employees who exist in one system but not the other.

Step 4 - Configure Rounding and Grace Period Rules

Attendance systems apply payroll rounding rules - for example, rounding to the nearest 15 minutes, or treating arrivals within 5 minutes of a scheduled shift start as on-time. Set these before you go live.

Step 5 - Run Parallel Systems for Two Weeks

Before fully cutting over, run the integrated system alongside your existing process. Compare records daily. Identify edge cases: employees who enter through a back door, shift workers on irregular schedules. Resolve each one before the old system is turned off.

Step 6 - Communicate to Employees

A short, direct communication eliminates most first-week confusion: Starting Monday, badging in through the main door is your clock-in. No separate action needed.

What You Gain

Integrated systems eliminate the manual reconciliation step entirely. Payroll pulls directly from the unified record. Overtime calculations become more accurate because the system sees the actual first badge-in time, not when an employee remembered to tap a secondary terminal.

TimeClock 365 was built as a unified platform from the start - access control and attendance are the same system. One badge-in creates both records. Contact us to see how setup works for your site.