Smart locks can make planned access easier for visitors and carers, but they do not make dementia-related door safety simple. A safe plan must cover free escape, authorised entry, loss of internet access, and dead batteries. A smart lock is an electronic lock operated by a keypad, phone, or other device. It should support care arrangements, not replace supervision, emergency planning, or a person's right to leave safely.
Medical information disclaimer: This article is for general educational purposes only and does not provide medical advice, diagnosis, or treatment. Always consult a physician or other qualified health professional about symptoms, medications, tests, or treatment decisions.
Table of Contents
- Safety Comes Before Convenience
- How Should Visitors and Carers Enter?
- What If Locking the Door Restricts Liberty?
- Planning for Wi-Fi and Battery Failure
- Frequently Asked Questions
Safety Comes Before Convenience
Never lock a person living with dementia inside their home. The Alzheimer's Association warns that confinement can become dangerous during a fire, fall, or panic. Alzheimer's Association guidance A door alert or monitoring device may offer a less restrictive option.
It can notify a carer when a door opens, allowing a response without physically preventing someone from leaving. The Alzheimer's Association also recommends placing exterior latches or deadbolts above or below eye level, removing interior-door locks that could cause lock-ins, and keeping an accessible spare key for emergencies. Alzheimer's Association home-safety guidance.
How Should Visitors and Carers Enter?
Give each regular visitor or carer their own access code when the lock supports it. Individual codes make it easier to know whose access is being used and to remove one person's access without changing everyone else's. For example, Google says an owner can assign each visitor or carer a unique four- to eight-digit passcode on a Nest × Yale Lock.
"Home Entry Only" access can also be limited to scheduled times. Google Nest passcode guidance Keep the arrangement simple enough for every carer to use. A code that is forgotten, a phone that is unavailable, or a confusing app can turn a helpful system into a barrier during a routine visit.
What If Locking the Door Restricts Liberty?
A locked exterior door can restrict a person's liberty, particularly when they cannot agree to the arrangement. The Alzheimer's Society says social services should be consulted in that situation so the person's best interests can be assessed.
Alzheimer's Society guidance The same guidance says carers considering a locked exterior door should use it for the shortest necessary time, consider fire risk, and ensure another carer can operate it easily. This is a care and safeguarding decision, not merely a technology choice. Before installing a lock, check:.
- Can the person leave safely and without assistance?
- Can carers enter if the internet, phone, or app fails?
- Is there a clear fire and emergency plan?
- Has the person's capacity and best interests been considered?
Planning for Wi-Fi and Battery Failure
A Wi-Fi outage does not always make a smart lock unusable. Google says a Nest × Yale Lock can still accept keypad codes during an outage, but app controls, notifications, and scheduled visitor access may fail because the lock cannot check the date and time. Google Nest connectivity guidance Battery failure needs a separate plan.
For a Nest × Yale Lock, holding a 9V alkaline battery against the external terminals temporarily powers the keypad so a valid code can unlock the door. Keep a compatible 9V battery and a tested code outside the locked home. Google Nest emergency-power guidance Do not assume one product's emergency method applies to another. Apple's guidance about some iPhone models using a resident key after the phone battery runs out does not prove that the door lock itself still has power or an emergency override.
Frequently Asked Questions
Should a smart lock replace a carer's physical key?
Not automatically. Keep a tested backup method, such as an accessible spare key or the manufacturer's documented emergency procedure.
Is scheduled access always reliable?
No. On a Nest × Yale Lock, scheduled visitor access may fail during a Wi-Fi outage because the lock cannot check the date and time.
