Abstract: A system tracks and controls access for supplying electrical power for charging devices associated with a user. The system has a server and one or more outlets. The outlets are connected to electrical power and are configured to supply electrical power to the devices. Each of the outlets has a socket configured to supply electrical power to the devices. Each of the outlets is further configured to transmit credentials to the server for authorization to access the outlet. The server is configured to determine whether the user is authorized to access the outlet and to transmit authorization to the outlet. The outlet is further configured to start a session and provide electrical power to the one or more devices upon receiving authorization from the server. The outlet is further configured to transmit information regarding the parameters to the server during the session.

Abstract: A system tracks and controls access for supplying electrical power for charging devices associated with a user. The system has a server and one or more outlets. The outlets are connected to electrical power and are configured to supply electrical power to the devices. Each of the outlets has a socket configured to supply electrical power to the devices. Each of the outlets is further configured to transmit the credentials to the server for authorization to access the outlet. The server is configured to determine whether the user is authorized to access the outlet and to transmit authorization to the outlet. The outlet is further configured to start a session and provide electrical power to the one or more devices upon receiving authorization from the server. The outlet is further configured to transmit information regarding the parameters to the server during the session.

Abstract: An apparatus for hearing protection comprises a pair of earpads, a band, microphones, speakers, vibration generators, and a processing unit. Each of the earpads is placed over an ear of the user. The band extends between the pair of earpads. The microphones convert acoustic signals into electrical signals. The speakers are located on each of the pair of earpads and direct sound towards the ear. The vibration generators are located on at least one of the pair of earpads and generate vibratory feedback to the user. The processing unit is connected to the microphones, the speakers, and the vibration generators, and compares first parameters of the electrical signals from the microphones with second parameters of predetermined warning sounds to determine whether the electrical signals comprise one or more of the predetermined warning sounds.

Abstract: An apparatus for hearing protection comprises a pair of earpads, a band, microphones, speakers, vibration generators, and a processing unit. Each of the earpads is placed over an ear of the user. The band extends between the pair of earpads. The microphones convert acoustic signals into electrical signals. The speakers are located on each of the pair of earpads and direct sound towards the ear. The vibration generators are located on at least one of the pair of earpads and generate vibratory feedback to the user. The processing unit is connected to the microphones, the speakers, and the vibration generators, and compares first parameters of the electrical signals from the microphones with second parameters of predetermined warning sounds to determine whether the electrical signals comprise one or more of the predetermined warning sounds.

Abstract: A system tracks and controls access for supplying electrical power for charging devices associated with a user. The system comprises a server and one or more outlets. The outlets are connected to electrical power and are configured to supply electrical power to the devices. Each of the outlets comprises a socket, a control module, a measurement module, and an identification module. The socket is configured to supply electrical power to the devices. The control module engages and disengages electrical power to the socket. The measurement module measures parameters of electrical power supplied to the devices by the socket. The identification module reads credentials for the user. Each of the outlets is further configured to transmit the credentials to the server for authorization to access the outlet. The server is configured to determine whether the user is authorized to access the outlet and to transmit authorization to the outlet.