Lockbox System - The Emerald Coast Association of Realtors® (ECAR) is contracted with Supra, a subsidiary of UTC Fire & Security, for the lockbox system. We are currently using the iBox and Active Key, as well as the eKey system utilizing your own smartphone. At ECAR, the lockbox system is a member service. You must be a Realtor® member, or their employee, or an affiliate member to use the key system. Please refer to our Membership page to learn more about membership.