A spare key to the house accessible via your mobile phone: Master Lock Bluetooth Lock Box review

Accessing the spare key from your mobile phone

If you’ve ever left your keys behind and then tried to get into your house you know what a nightmare that is.  Which is why we all have that hidden location where we keep a spare key.

It might be under the mat, but that’s a dead giveaway, or it could be hidden under a rock or a gnome in the garden.  More likely you’ve gone up in the world and secured your keys with some sort of combination lock box – like this one:

Great idea – except, what if you forget the code? Or more problematically, what if you wanted to let someone have your key for just a one off occasion, like family visiting for the weekend – or perhaps you’re running an AirBNB and want the tenants to get a key on a specific day?

Enter the Master Lock Bluetooth Lock Box.  I installed it in place of the original combination unit with ease:

With an app on my smartphone, I can now simply walk up to the lock box – with my phone in my hand or pocket, and tap any button.  It unlocks.

It automatically re-locks too after 5 seconds, and that timeframe is customisable within the app.

There is also a combination code you can use.

Within the app you can then share the current passcode, or a temporary code which will work on a set day and time.

Perfect way for AirBNB hosts to allow access to keys and not have to change the combination every single time they have a tenant.

Installation was a breeze,  setup was simple, the app works well.  Like many Bluetooth locks I’ve found that after some time you will need to re-open the app to enable the bluetooth connection again.  Other than that – quality unit.

Pricey though, at $220 it’s three times more than just a combination version, but for those with an active smartphone household or those AirBNB hosts looking for some simplicity and process for their tenants, it’s a great option for sure.  Available at Bunnings.


Trev produces two of the most popular technology podcasts in Australia, Your Tech Life and Two Blokes Talking Tech. He hosts a nightly radio show on Talking Lifestyle, 8pm Monday to Friday in Sydney, Melbourne and Brisbane, appears on over 50 radio stations across Australia weekly, and is the Tech Expert on Channel 9’s Today Show and A Current Affair. Father of three, he is often found down in his Man Cave. Like this post? Buy Trev a drink!
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