Access control is a door that checks who is allowed through it, logs every credential used, and can stop honoring a credential the moment you turn it off. No re-keying, no shared codes, no guessing.
Credentials, not keys
Keys get copied and codes get shared. A credential belongs to one person, works only where and when it should, and leaves a record every time it is used. The question changes from did someone get in to exactly who, through which door, at what time.
The firing problem, solved
When an employee leaves, their access ends from a screen in seconds. No lock changes, no hoping the key comes back, no shared code that half of last year's staff still knows. For any business with turnover, this alone justifies the system.
Paired with video
Entry events can be paired with camera footage, so the log does not just say a credential was used, the video shows who used it. Doors, cameras, and the alarm working as one system is the difference between data and evidence.
Questions we get
Yes. Plenty of systems start with the front door and the office, and grow when the business does.
Depends on the system: fobs, cards, or codes tied to the individual. The audit trail works the same either way.
No, it completes it. Access control manages the people who belong; the alarm handles the ones who do not.