Are keypad gate codes secure?

Keypad codes are a genuinely useful, widely used access method, but it’s worth being honest about their biggest limitation: a static PIN code is inherently shareable, and once it’s out, there’s no way to guarantee it stays only with the person it was originally given to.

The core weak point

Unlike a physical key or a remote, a keypad code is just information — four or six digits that can be told to someone, texted, or written on a sticky note. Codes tend to spread further than originally intended: a resident shares a code with a friend “just this once,” a code ends up in delivery instructions left at the gate, or a departing tenant or former employee still remembers a code that was never changed after they left. Once a code is out in the world this way, it functions as valid access indefinitely, until someone actively changes or deletes it.

That doesn’t mean keypads are a bad choice

This limitation doesn’t make keypads insecure so much as it makes them a system that needs basic upkeep to stay secure — much like a shared house key needs to be tracked and occasionally re-keyed. Keypads remain one of the most practical, inexpensive access methods available, and they’re genuinely well suited to situations like recurring service providers, family members, or anyone who needs reliable access without carrying a physical device.

How to manage keypad security well

A few habits meaningfully improve keypad security without adding cost or complexity: assign individual codes per person or household rather than one shared PIN (see our post on how many codes a keypad can hold and how to change them), so a single code can be revoked without disrupting anyone else; periodically review and delete codes tied to former residents, past contractors, or one-time visitors rather than letting the list grow indefinitely; and, if your keypad model supports it, use time-limited or single-use codes for one-off visitors like a delivery or a contractor, rather than a permanent code for a temporary need.

When to layer on additional access control

For properties where security is a higher priority — a business, a rental property with regular tenant turnover, or a gated community — pairing a keypad with a second credential type (a telephone entry system, RFID fob, or license plate recognition — see our access control credential types post) gives a stronger, more auditable system than a keypad alone. The keypad doesn’t need to be replaced; it just doesn’t need to be the only layer of access control for higher-security situations.