Access Codes and Keypads: Security Best Practices
5 min · StayParlo Journal
Why Access Code Security Is Critical in Short-Term Rentals
Unlike long-term rentals, your property welcomes many different guests throughout the year. Every turnover represents a potential risk if the access code isn't changed or if a physical key is circulating without oversight. A code that stays the same for months can fall into the wrong hands, leaving your property vulnerable to unauthorized entry long after a guest has checked out.
Access security also affects guest confidence: a clear, modern, and reliable system immediately conveys professionalism. On the other hand, a lockbox with a code that hasn't changed in years, or a keypad with worn-down buttons, sends a negative signal about the quality of your management. Taking care of this detail means protecting both your property and your online reputation.
Choosing the Right Access System: Keypad, Lockbox, or Smart Lock
The mechanical combination lockbox is the most common option among beginner hosts. It's simple and inexpensive, but it has one major drawback: the code is the same for every guest and difficult to change frequently. If you go with this system, choose a certified model with at least 4 digits, securely mounted on a sturdy wall bracket, and change the code between every stay without exception.
Smart locks are now the best alternative for active hosts. They allow you to generate a unique, temporary code for each guest, active only for the duration of their stay. Some models include access logging, letting you know exactly who entered and at what time. The upfront investment, typically between $150 and $350, is quickly offset by the time saved and the peace of mind gained.
Golden Rules for Creating and Managing Your Codes Safely
A good access code should never be a date of birth, a sequential string like 1234, or the apartment number. Opt for random combinations of at least 4 to 6 digits with no obvious pattern. If your smart lock supports it, set a different code for each guest and program it to expire automatically at the checkout date and time. This eliminates any manual action on your part.
Always send the access code through a secure channel, and as late as reasonably possible before arrival — ideally the day before or the day of check-in. Avoid including it in your public listing or in messages that could be forwarded. If you use a digital welcome guide like StayParlo, you can automate code delivery at the right moment, directly within the guest's personalized guide, without having to copy and paste it manually for every booking.
Regular Maintenance and Inspection of Your Access Devices
On a mechanical keypad, buttons that are more worn than others give away your code — a determined person can quickly identify the combination just by looking at the marks. Regularly inspect the visual condition of your buttons and change the code as soon as you notice uneven wear. For smart locks, check the battery level every month and set up a low-battery alert to avoid any unpleasant surprises on the day of a guest's arrival.
Make sure to test your access system after every firmware update or code change. A quick 2-minute check before a guest arrives can save you a stressful phone call at 10 PM. Always have a documented backup plan: a trusted neighbor with a spare key, or a clearly defined emergency procedure to share with your guests in case the system fails.
Communicating Codes Effectively and Reassuring Your Guests
Sharing the access code is a key moment in the guest experience. A clear, well-structured message accompanied by a photo or a precise description of where the keypad or lockbox is located prevents any confusion, especially for guests arriving at night or in an unfamiliar city. Include the exact address, the building name if applicable, the precise location of the lockbox or lock, and the code written out digit by digit for easy reading.
Reassure your guests by briefly explaining that the code is unique to their stay and will be reset after checkout. This small detail, often overlooked, builds trust and can make a real difference in the review they leave afterward. A guest who feels safe is a guest who comes back — and recommends you to others.
Frequently asked questions
Should I change the access code between every guest?
Yes, it's strongly recommended. With a smart lock, this rotation happens automatically. With a mechanical lockbox, change the code manually after every checkout, without exception, to prevent any unauthorized entry.
What should I do if a guest loses the code or can't get into the property?
Always have a backup plan: an available emergency contact, a spare key with a trusted neighbor, and a written procedure you can send quickly. Also include your phone number in the arrival message for exactly this kind of situation.
What's the safest way to share the access code?
Send the code through the booking platform's secure messaging system or by text message, the day before or the day of arrival. Avoid generic emails or public notes in your listing, and never share the code weeks in advance as a matter of routine.
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