Electronic locks for server racks

A security system for a server rack comprising:

• an electronic key;
• an electronic lock configured to be attached to the server rack, the electronic lock configured to communicate with the electronic key for determining whether the electronic key is authorized to unlock or lock the electronic lock;
• and
• a latch mechanism operably engaged with the electronic lock and configured to move between a latched position and an unlatched position when the electronic lock is unlocked,
• wherein the electronic lock comprises a handle configured to be disengaged from the electronic lock when the electronic key is authorized, wherein the handle is configured to actuate the latch mechanism for accessing the server rack when the handle is disengaged from the electronic lock and the electronic lock is unlocked, and wherein the electronic lock is configured to re-lock only when the handle is engaged with the electronic lock.