Access Tends to Outlive Its Purpose
Security systems collect access over time: alarm codes, spare keys, garage remotes, app invitations, camera accounts, shared passwords and Wi-Fi details. Each is created for a reason, but rarely removed when the reason ends. A former roommate, an ex-partner, a previous tenant, a contractor or a past owner may still be able to arm the system, unlock the door or view a camera.
This is not usually a matter of bad intent. It is simply the sort of thing that is easy to overlook. A short routine each time occupancy changes keeps access in line with who actually lives or works in the home.
When to Do This
Review access whenever:
- Someone moves in or out, including roommates, partners, adult children and live-in help.
- You buy or move into a home that already has a system.
- You sell or leave a rental and are handing the system on.
- A relationship ends, or you feel uneasy about who might still have access.
- A long-term guest, a caregiver or a contractor finishes their work.
Moving In: Taking Over an Existing System
If you buy or rent a place with a system already installed, assume that the old occupants, and possibly others, still hold codes and accounts. Do not rely on a walk-through note.
- Identify what is there. Look at the panel, doors, cameras, smart locks and any hubs. Find the model information on the equipment so you can find the manual or ask the installer or provider.
- Confirm who owns the account. The previous owner or tenant may have been the account holder with a monitoring company. Ask the company what is needed to transfer service or to start fresh. Contract terms vary, and the question of whether to keep or cancel is covered under service contract and early cancellation.
- Change the master or installer code if you have access to do so, and replace every user code. If you cannot change them yourself, ask the monitoring company or an installer.
- Re-key or replace the locks. Previous occupants may have kept copies of keys. This is among the most worthwhile steps, since keys can be copied without anyone knowing. The ideas behind key control apply here.
- Reset wireless devices and cameras. Where possible, factory reset them and set them up under your own account with new passwords. Remove any link to the previous owner’s account.
- Change network details. If you inherited a router, change its password and name, and replace the Wi-Fi password. Smart devices can sit on a separate guest network, as described under guest network.
- Check what is recorded. Ask whether cameras or microphones were in place, and where. Old footage may remain on a device or cloud account. Recording laws and notice expectations differ by location; check local rules.
Moving Out: Handing It Over Properly
If you leave a home that has a system:
- Remove your personal accounts and app access, or transfer the system so that you are no longer the account holder.
- Delete saved recordings and wipe devices you plan to take with you. Consider the privacy points under data deletion.
- Pass on only what the new occupant needs, such as manuals and the monitoring company’s contact details, and tell them to change codes.
- Contact the monitoring company so the contract is canceled, transferred or adjusted according to its terms. If you take equipment with you, see the discussion of portable systems.
- Collect keys, fobs and remotes from the people who held them.
When a Household Member Leaves
When a roommate or family member moves out:
- Delete their personal alarm code, not just change a shared one. Individual codes make this clean.
- Retrieve keys, fobs, garage remotes and cards.
- Remove them from the mobile app, camera views, notifications and any smart home or voice assistant accounts.
- Change shared codes and Wi-Fi passwords if there is a reason to believe they were widely known.
- Update emergency contact lists so the monitoring company does not call someone who is no longer there.
If the departure is difficult, take care to prioritize personal safety. If you have concerns about harassment or safety, a local support organization or the police can advise. Do not take steps you are unsure about.
When Someone New Joins
For a new roommate, partner or relative:
- Create a personal code rather than sharing yours.
- Show them how to arm, disarm and cancel a mistaken alarm. Walk through the entry delay and the panel’s messages.
- Add them to the app only with the access level they need, and think about whether they should see camera feeds. Make sure other residents know where cameras are and what they record.
- Give them keys or fobs, and note who has which.
- Add them to the emergency contact list if appropriate.
A guest or temporary resident can be given a temporary or limited code that expires, if the system offers that feature.
Keep a Simple Access Log
A one-page list, kept somewhere secure, can help:
| Person | Alarm code | Keys/fobs | App access | Date added | Date removed |
|---|
Avoid writing the actual codes on it, or store the list securely if you do. Review it every few months, and any time occupancy changes. The practice is similar to a business’s handling of employee credentials, only simpler.
Security of the Accounts Themselves
The settings that matter aren’t only on the panel. App accounts, camera logins and email accounts attached to the system should have strong, unique passwords and two-factor authentication where offered. If the system is tied to an email address belonging to a previous occupant, move it to your own account first. General online safety is outlined under cybersecurity.
A Realistic Expectation
Updating access cannot make a home impregnable, and no routine can account for every copy of a key or every shared password. But removing known, obsolete access is among the lowest-cost steps available, and it ensures that the people who can enter and see your home are the ones you intend.