+0.51% The initiative, called Key for Business, entails Amazon delivery drivers requesting access to a participating building via an app, and the apartment building door or gate to a community is unlocked only after Amazon confirms the driver's ID, route, GPS location and time of request. Some landlords who have the key system installed told the Associated Press that the system has reduced the constant buzzing from delivery folks and provides a more secure option than disclosing the building entry code to scores of delivery people. One even said he is so happy with the system he would have paid for Amazon to install it. Amazon would not give the exact number of buildings it has access to, but disclosed that the number is in the thousands.