I am pretty sure we have all been in the position of going from one house to another, or from the house to the office and attempting to join a wireless network only to find out that no-one can remember the security password. Although it may fall under the category of being a first-world-problem, it is actually rather infuriating to have a wireless network dangled in front of your face knowing that you don't have the security credentials to get access to it.
