Copied from landlord's email -
Around 4:15am on Sunday, October 23rd, two men entered the building using a postal key which is a universal key used by mail carriers to buzz open building entry doors. It is now widely known that these keys are in the hands of thieves however the post office continues to use them as it is their only way to access buildings and deliver mail. I'm sorry to report that the two men who used the postal key to open the entry doors stole five bikes and several packages on Saturday morning.
Protect your bike – get a security protection label!
Apply the protection label to your bicycle and instantly reduce the risk of theft by up to 50%! Moreover, if the bike is stolen, you increase the chance of its safe recovery by up to 70%.