Abstract: For configuring access rights of electronic locks, a mobile communication device obtains an access right identifier. Configuration data comprising the access right identifier is transferred from the mobile communication device (3) to a first electronic lock, via a close range communication interface, thereby configuring the first electronic lockto grant an access right to electronic key devices (4) having stored thereon the access right identifier. From the mobile communication device an update request, comprising the access right identifier, is transmitted to a computer system via a communication network, enabling the computer system to transmit the access right identifier via the communication network to one or more second electronic locks for configuring the one or more second electronic locks to grant an access right to the electronic key devices having stored thereon the access right identifier.