The two main flaws in a lot of these key things are; a) they're often not that much smaller so why bother, b) rented accomidation / expensive keys.
Pretty sure if I loose the main key to my block it's something like £100 and can only be copied if you have the pass keys, etc. so the biggest key is not going to get fucked about with. Also you're not always sure how long you're going to live in your place for so again are you going to spend money making duplicate sets?
I always liked this one the best:
http://www.carryology.com/wp-content/uploads/2010/06/unqiuekeys1.jpg
One of the best solutions was the keyport slide http://mykeyport.com/
The two main flaws in a lot of these key things are; a) they're often not that much smaller so why bother, b) rented accomidation / expensive keys.
Pretty sure if I loose the main key to my block it's something like £100 and can only be copied if you have the pass keys, etc. so the biggest key is not going to get fucked about with. Also you're not always sure how long you're going to live in your place for so again are you going to spend money making duplicate sets?