One lost master key can cost more than a small access control system. Credentials that can be revoked in ten seconds change the math.
Keys have no memory
A key tells you nothing. It cannot say who came in at 2 a.m., cannot be scheduled to stop working on Friday, and cannot be turned off from a phone when someone leaves on bad terms.
An electronic credential does all three, and the audit trail settles most internal disputes without anyone reviewing video.
The rekey math
Rekeying a mid-size commercial building after a lost master runs into real money once you count the locksmith, the cylinders and the downtime. Do it twice in three years and you have paid for readers on your main doors.
Start with the doors that matter
You do not have to electrify every opening. Main entrance, back-of-house, server room and any door to cash or controlled inventory covers most risk. Everything else can stay mechanical until it needs to change.
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