By Mia Chen, Family Safety & Smart Home Writer at Bestkid
Prepared October 27, 2026 | Product information checked October 26, 2026
Short answer: If your toddler can open the front door, start with active supervision, a clear entryway, and a check of how the door closes and unlocks. Bestkid MD11 and MD12 offer an indoor PIN requirement in Child Safety Mode; MD12 also adds a 2K entryway camera. Consider that mode only after confirming emergency-exit suitability, and only while parents are home actively supervising. Switch it off before parents leave. A lock should support your family’s routine while preserving prompt escape.
Key takeaways
- Check what your child can actually reach and operate, including the inside handle and any reachable latch.
- MD11 and MD12 manage indoor opening through a four-digit PIN when Child Safety Mode is active; outside-entry authorization is a separate function.
- MD12 adds a 2K entryway camera. That view supports checking the doorway; it does not replace supervision.
- Child Safety Mode must not be enabled or left enabled when parents are away; a parent’s presence alone does not establish compliance with emergency-exit requirements.
- Review the setup when your child learns a new skill, another adult takes over, or the door or lock changes.
Plan the door, the supervision routine, and emergency access together. Illustrative family scene; the pictured hardware is not a product or installation reference.
Bestkid publishes this guide and sells MD11 and MD12. Product descriptions come from the linked official pages; general safety guidance is linked separately.
What should you do when your toddler starts opening the front door
Stay with your child and move them away from the doorway first. Then identify the opening sequence: can they reach the handle, turn a thumbturn, or pull open a door that did not latch? If a door opens without the expected release action, have its alignment and latch checked. Adding another lock does not repair a faulty door.
Look at the moment the problem happens. Is it during deliveries, when a sibling returns, or while adults are handing over care? Agree who is watching the child during those transitions. After someone passes through, check the door has actually closed and that the intended operating mode is in effect.
Teach a simple rule, such as waiting for a parent before opening the door, but keep adult supervision in place. The CPSC childproofing guidance explains that no device is completely childproof and that safety devices must be correctly fitted and reengaged after use.
What should you check around the door before adding a lock
Assess the whole doorway from inside the home. A higher fitting is not automatically suitable if your child can move something to reach it or if an adult cannot operate it promptly.
Check |
What to look for |
Practical next step |
|---|---|---|
Child’s reach |
Handles, thumbturns, controls, and objects that could be used for climbing |
Move movable climbing aids away; reassess after new skills |
Door condition |
Poor alignment, a latch that misses the strike, or a door left ajar |
Arrange repair and confirm normal closing |
Path to the exit |
Shoes, deliveries, furniture, or other obstructions |
Keep the route clear |
Adult operation |
Whether each responsible adult understands the current mode |
Demonstrate the documented opening procedure |
Other routes outside |
Back, garage-access, and side doors |
Review those routes as well |
A door-open alarm may help an adult notice an opening, but an alert does not physically stop passage. Decide who will hear it and respond; do not rely on a phone notification as the only safeguard. For selection questions, see Bestkid’s door-alarm guide.
How MD11 and MD12 address opening from inside
Securing entry from outside does not necessarily prevent a child from opening a door from inside. When comparing a smart lock, check its interior operation rather than assuming an exterior keypad changes both sides.
Bestkid MD11 adds a parent-set four-digit indoor PIN requirement when Child Safety Mode is active. Authorized adults retain their outside-entry options, including fingerprint, PIN, RFID, app access, and an emergency key. Those entry options should not be confused with the procedure for leaving from inside.
Bestkid MD12 keeps that indoor PIN approach and adds a built-in 2K entryway camera, live video, and doorbell alerts. Choose it when the view of the entrance is also useful to your household. The camera is not a guarantee of noticing every attempt to leave.
Door-management question |
MD11 |
MD12 |
|---|---|---|
Indoor opening with Child Safety Mode active |
Parent-set four-digit PIN |
Parent-set four-digit PIN |
Authorized entry from outside |
Multiple authorization methods |
Multiple authorization methods |
Integrated entryway camera |
No |
Built-in 2K camera |
Main reason to consider it |
Indoor access control without an integrated camera |
Indoor access control plus entryway video |
The camera does not establish that MD12’s indoor restriction is stronger than MD11’s. For this problem, the choice is whether you also want video, after door fit and emergency access have been assessed.
When can parents consider enabling Child Safety Mode
For both MD11 and MD12, consider Child Safety Mode only while parents are at home actively supervising their child. Parents must switch the mode off before leaving. It must not be enabled or left enabled while parents are away, because an interior PIN restriction could hinder escape during a fire or another emergency. Neither model makes it appropriate to leave a toddler home alone.
That supervision condition is necessary for the use described here, but it does not establish that an indoor PIN restriction is permitted on your exit. NFPA’s explanation of egress-door locking describes the general requirement for ready opening from inside without a key, tool, or special knowledge, subject to specific permitted arrangements. An interior PIN can raise that concern.
Have a qualified installer and the local fire or building authority assess your actual door and operating mode. If the restriction is not permitted or would interfere with prompt escape, do not enable it. Keeping the PIN private, or having a parent nearby, does not resolve that requirement by itself.
How can you preserve emergency access
Plan departure from inside separately from authorized entry from outside. An outdoor backup key or remote-unlock feature does not by itself establish a safe escape method for occupants inside.
The U.S. Fire Administration’s home escape guidance recommends identifying two ways out of each room, keeping exits unblocked, choosing an outside meeting place, and practicing with everyone in the home. For a toddler, assign an adult to help them leave and discuss who takes over if that adult cannot help.
Before relying on any lock setup:
- Confirm the documented inside-opening procedure and how to switch off Child Safety Mode. Each responsible adult should understand both.
- Ask Bestkid to explain operation with a depleted battery, loss of Wi-Fi, and other relevant faults. Do not assume automatic release or an indoor mechanical override that has not been documented.
- Show every caregiver how to open the door from inside and switch off Child Safety Mode. If anyone has difficulty using the lock, adjust the setup before relying on it so they can leave promptly in an emergency.
- Walk through the agreed escape routes together. Do not conduct a drill that traps a child or blocks an exit.
The CPSC’s advice on door safety devices also stresses quick adult opening in an emergency. A setup that causes confusion or delay needs to be reconsidered before use.
What should you confirm before choosing MD11 or MD12
Send Bestkid clear photos of both sides of the door and the existing lock, along with measurements requested in the relevant installation guide. Confirm door thickness, existing holes, backset, latch alignment, and any restrictions on altering the door. Do not assume compatibility from a similar-looking product photo.
Then decide whether you need an integrated camera. MD11 may suit a household that wants the documented indoor-access features and already has the entrance view it needs. MD12 adds video at the door. For either model, confirm power management, app requirements, and the actual inside-opening procedure before installation.
You can ask Bestkid about your door or compare the child-safe smart door locks. For an exit-related installation, complete the emergency-access assessment before choosing the operating mode.
What should you recheck as your child grows
Revisit the doorway after a new climbing skill, a successful opening attempt, a PIN change, servicing, or a change of caregiver. Do not wait for a second unexpected exit to review the arrangement.
- Check the door closes and latches as intended.
- Keep climbing aids away and the exit route clear.
- Confirm which parent is actively supervising.
- Check the current mode and ensure it is off before parents leave.
- Review battery status and the documented response to faults.
- Make sure every responsible adult understands the opening and escape plan.
For wider planning, use Bestkid’s home safety checklist and door safety guide. These related guides also address families managing wandering; a toddler opening a door does not by itself indicate a medical condition.
Frequently asked questions
How can I childproof a front door my toddler can open?
Start with supervision, door and latch condition, reachable controls, and objects your child could climb. Assess suitable access controls and alerts while preserving prompt emergency exit. No lock or alarm makes a door completely childproof.
Do MD11 and MD12 restrict opening from inside?
When Child Safety Mode is active, both require a parent-set four-digit PIN before the door can be opened from inside. Authorized entry from outside is a separate function. Confirm the actual installation and emergency-exit suitability before enabling the mode.
Can Child Safety Mode stay on when parents leave home?
No. For both MD11 and MD12, parents must switch Child Safety Mode off before leaving. It may be considered only while parents are home actively supervising, and only where the installation and mode are permitted and allow prompt emergency escape. Never use it to leave a toddler home alone.
Does MD12 offer stronger indoor control than MD11?
Both use the documented four-digit indoor PIN approach. MD12 adds a built-in 2K entryway camera, live video, and doorbell alerts. Those additions do not establish stronger indoor restriction or guaranteed detection of a child leaving.
Is a door alarm enough to stop a toddler going outside?
An alarm can signal an opening but does not physically prevent passage. Its usefulness depends on an adult noticing and responding. Combine an appropriate alert with supervision and a suitable door arrangement rather than treating it as a replacement for either.
Does an emergency key guarantee safe exit from inside?
No. A key offered for outside entry does not establish how occupants can exit from inside. Confirm the documented inside-opening procedure, fault behavior, and emergency-exit requirements for the installed lock and operating mode.
About the author
Mia Chen is Bestkid’s Family Safety & Smart Home Writer. She covers household access, product compatibility, storage safety, and caregiver routines, using product documentation and public safety guidance. Bestkid sells the locks discussed in this guide.
