Locks that work

I'd never even thought of this... How far could you go with this, could you have the same key for your house, padlock and bike locks?!

Would it lesson the security of a double lock of both locks had the same key?

The only security weakness is if you lose your key, as then all keyed-alike locks are compromised. Hence, not a smart option if you regularly lose stuff!

It is actually possible to use a cut-down 'Euro' cylinder in various of Squire's padlocks, where Euro cylinders are the things in modern double-glazed doors. However, it does need a special version of the padlock and you have to cut the double-sided Euro cylinder in half to get it to fit. We've never gone that far for ourselves. Having the locks for the bikes, the shed, the motorbikes (when we had them), the trailer and various other things all on one key was and is brilliant. We also have the house front and back doors and the personal door on the garage all on a common key (although different to the padlocks). Bad news if you lose your keyring, but it would still be bad news if that keyring had 6+ keys on it rather than 2.

Also I wonder how much it was cost just to be carrying around three or four less keys?

That's the rub, where Squire charge an extra £8.40 RRP for each keyed-alike option. We do them a touch cheaper than that but it can still be expensive. Being able to do it retrospectively, to add a matching lock to one that was purchased a year ago, for example, is quite neat. It only works across compatible cylinders, though, as I mentioned before. Some locksmiths can do it while you wait, though, but they often charge top-whack for the locks. Even so, once you've done it you've got a usability benefit every day, and I suppose your trouser pockets last longer ;-)