Keys in both sides of a lock?

I often see sheds with a padlock attached with pozidrive screws and think WTF?

What makes you think that ? I knopw couples that have a key each some even give a key to thier kids when they are old enough.

What do you mean in a safe place ?

Which problem is that ?

IF.

What happens IF that person dies or is taken seriously ill.

Why wouldn;t they what do you expect tghem to do with it ?

So not much use then is it.

Not true as a friend of mine was a locksmith and he can get through certain doors without needing to drill out the locks.

Anywhere except in the lock.

The problem stated by the OP at the beginning of the thread.

You can't get in, either because you left the house by slamming the Yale lock without having its key, or you left the house via the key lock we're talking about, and the person put their own key in the lock after you'd gone.

I would expect them to keep the key in their pocket to get back in again.

It would be OK if the users acted sensibly.

So yuo havenlt got a clue then have you.

Are you saying keeping a key under the flower pot in the front garden is a safe place ?

So you forgot they want to keep a key in the door on the inside.

where did you get that info from ? because slamming a door hard doesn't change the way it locks.

Yep and that's part of the problem isnlt it, decide which is the more to happen.

Which isn't the question.

Which is why I can unlock our front door from my mobile.

Can others .

No. At least, a vrowbar would be easier. It has 2FA.

So no one else can get into your property ? what happens if something goes wrong with the phone ?, what if someone such as the wife or kids want to get in ?

I'm glad I don;t have such an inflexable system.

The normal entry method is a key. Those flat metal things.

The family all have the same phone capability.

So the same problem as anyone else would have with a key from it getting lost stolen or broken.

So anyone with the phone can get in too, well hopefully whatever security is on your phone and everyone else in the family that has it. Of course we all know phones with such security never get stolen.

No.

One can get into the house using a key.

If that is lost or stolen, or forgotten, one can use the phone to gain entry.

You clearly don't understand what 2FA is.

I've never heard of a lock that can be opened by a mobile before; it must be electric. Presumably it stays locked when there's a power cut. (I don't know what 2FA is)

It is.

I built the controller and wrote the software.

Yes. One can choose that action when purchasing the item (it's a normal Yale high security lock, but the part on the door frame is replaced with the electric version.

Two factor authentication. "Something you know, something you have, soemthing you are".

can you get into the house using an app on the phone.

I suppose no one else can use a phonme and app to get in either are you the only person in the world that can do this app and phone trick ?

I do as I use it but I don't see how it would work on a front door.

Yes well done anyone can get into the house using the correct key or who is skilled enough to pick the lock.

and if that lost key is stolen or found then anyone with that key can also get into your home. a 2FA phone will NOT stop that from happening.

I do I use it, but I wouldn't use it on my front door.

He could pick them or they are master keyed,I can get in most sydney electrical meter rooms with the same key.

Any lock that a skeleton key can open is not a secure lock and usually very old fashioned.

I have a key in a little combination strong box out side bolted to a wall not on view from the door.