Keyless home doorlock

After getting this up and running, how would you feel about home security, if your card keys were lost or stolen?

Cheers Don...

Don't like it, can't see the point.

I would like to

It would be possible but expect it to cost a lot of money. Other options would be a finger print reader or optical scanner.

Thieves don't even need the keys:

I know from personal experience (in Europe) that modern cars get stolen very easily. (I don't know whether this is also happening in Australia yet.) I have a theory that car makers deliberately don't try too hard to make the immobiliser and locking secure - Just about every time someone's recent-model car gets stolen, they buy a new one, usually the same brand. The worse the immobiliser works, the more new cars they sell, so they make sure the immobiliser doesn't work too well.

Calm! The most likely entry is by breaking one of the plentiful glass doors or windows. Anyway, the car key is no more likely to be lost or stolen than the current house key.

Finger print readers have been around for a while, and their accuracy seems to be flakey. I recently motorised my workshop door and was considering one as a secondary means of operating the door aside from using one of the remote controls, but I couldn't find one that was reliable enough to be completely comfortable with.

So I opted for a keypad with a proximity reader.

A lot of industrial complexes use them on security gates, and they're fairly basic. Access is either by numbered code entry or by holding one of the proximity tags up against the keypad for a moment. It's proven to be very reliable, and the proximity tags themselves are in the form of either a credit card or a keyring tag the size of a ten cent piece.

I prefer the keyring tag myself, and to open the door I simply walk up and present my car keys to the keypad very briefly and it pops the locks and starts the motor.

Simple.

Some banks still use them on each computer keyboard to unlock access.

The trouble is, some smart buggers demonstrated how to convert a picture of a fingerprint into a 3D-printed finger that actually works. It gives you pause...

I certainly wouldn't use one to protect anything I valued, that's for sure.

Here are some more links in post I made in aus.electronics last year:

I just had a quick look into this, here are some links that I've partially read, apparently these are called "Relay Attacks":

Some Swiss researchers managed to make a fool of some systems in

Yet Wikipedia has a nice little unreferenced section saying that it's all impossible:

Some nifty detection methods up there by the way, though I'm not sure I'd trust all of them.

Finally, it seems that the UK's less honest Land Rover enthusiests have been giving people such a hard time that insurers are running away:

Though at the end, Jaguar/Land Rover suggest that the theives are just cloning the keys. All seems a bit old-fashioned really.

"In a statement, Jaguar Land Rover said vehicle theft through the re-programming of remote-entry keys was an on-going problem which affected the whole industry."

But it's all right because you can just install a second system that checks if you have a second key. A key for a key then, that's progress...

She's blonde, right? ;-)

Lol :)

She has blonde tips in her hair, so I'm sure that accounts for something :)