^ I have a similar problem: the front of the house is on a relatively busy street, so that and being on the second floor pretty much guarantee that nobody will try to get in from there, but in the back we face a private garden which wall is a joke to jump over, hence the need for a bit more security. In any case, these locks come very highly recommended and are apparently the best on the market. Here's to hoping they will never be put to the test!