The iBox Supra infrared KeyBox.

Real-Time Information
Supra provides the only KeyBox solution for Real Estate Associations and Multiple Listing Services that consistently provides instant showing information. Supra's ActiveKEYs and eKEYs transmit showing records immediately after buyer's agents obtain listing keys. Showing records include the identity of the keyholder, the time and date that the keys were accessed, and information about the specific KeyBox that was opened.
Instant showing information saves real estate professionals time and gives them the tools to be responsive to client needs. Supra's server receives this information and, depending on the seller's agent's preferences, sends a notification to a key or sends an email with the address of the property being shown, the time and date of the showing, the name of the buyer's agent, and that agent's contact information.
Seller's agents may also access this information using the Internet. By logging into Supra's secure web server, agents can obtain up-to-date reports about the buyer's agents who have shown a listing. Easily accessible, current information is an important advantage to agents. It enables them to effectively answer homeseller questions regarding showing activity, obtain feedback about the property from showing agents, and to notify interested agents of price changes or other events that occur during the sales cycle.