And what I have for you today is a monkey control magnetic door lock controlled by a combination fingerprint R F I D control panel.

This system, which sells as a set on Amazon for $170 was sent to me by Mark in Cambridge, Massachusetts.

So, Mark, thank you very much for the generous donation.

I set everything up on this demo board, then wired according to the manufacturer's instructions.

There's a few different things here, so let me walk you through the various components.

First, we have the magnetic lock itself, which, according to the manufacturer, can hold a door closed with £600 of force.

Then we have the lock controls.

This will be on the external side of the door, and it could be activated in a few different ways.

The first is by using a fingerprint.

I can see it released the magnetic clamp.

We can also use an R f i.

D tag.

And finally we can input a numeric code.

I'm going to use user number one with the set password of 1234 Okay, The next thing we have is the request to exit button.

This goes on the inside of the door and unlocks it when someone wants to get out.

And the last item on the board is the power supply and control module.

Now all of this looks very impressive, but there's a pretty fundamental flaw with the set up that's actually very common on these standalone systems.

Ideally, the device on the outside of the door should read the credential and then transmit it to the secure side of the door for verification.

But that's not what's going on here.

This device captures the credential, verifies it and tells the door to open.

Essentially, what that means is that these wires are sending a no signal, and we need to change that into a yes.

Unfortunately, all we need to do it is a paper clip and the screwdriver.

Let me show you how that's done.

There is one screw holding the cover plate on.

As I'm taking it out.

I should note that some devices like this will have an anti tamper switch.

However, this one does not, and even if it did, they tend to be fairly easy to bypass.

So as I look on the inside, I can see four wires going into this, a red and black, which will be our power and ground.

Then we have a blue and orange.

Those blue and orange are labeled on the circuit board as and Oh and C O M N o stands for normally open and C O.

M is common.

So normally the circuit between these two wires is open.

Open the door.

We just need to close that circuit, and I'm going to do it by bridging them with this paper clip.

It's really just that easy.

So as you saw, despite the intimidating high tech appearance by passing, this is just a Z Z as opening a simple mechanical lock.

In any case, that's all I have for you today.

If you do have any questions or comments about this, please put them below.

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And, as always, have a nice day.