An electronic lock, being adapted to harvest energy from a radio frequency, RF, connection established between a mobile device and said electronic lock, further being adapted to use the harvested energy for processing an authorization token received from the mobile device via said RF connection, further being adapted to use the harvested energy for controlling an unlocking switch in dependence on a result of said processing, wherein the unlocking switch is an electronic switch that does not require more power than the energy harvested from the RF connection further being adapted to process the authorization token by transmitting the authorization token to an authorization server via a further RF connection, further being adapted to control the unlocking switch by enabling the unlocking switch upon or after receipt of a response indicative of a positive verification of the authorization token from the authorization server, said electronic lock comprising a low-power RF transceiver (LpRF) which is adapted to establish the further RF connection via a further antenna, wherein the low-power RF transceiver (LpRF) does not require more power than the energy harvested from the RF connection and wherein the unlocking switch and the low-power RF transceiver (LpRF) require no battery-supply power, comprising a primary antenna used only for communication with the mobile device via the RF connection, comprising a secondary antenna which is adapted to harvest the energy from the RF connection, wherein the secondary antenna is connected to an energy harvesting and energy storage unit, which is adapted to store the harvested energy, and comprising a secure element which is connected to the primary antenna and which is adapted to store the authorization token, to encrypt the authorization token before the electronic lock transmits the authorization token to the authorization server, and to decrypt the response from the authorization server. being adapted to harvest energy from a radio frequency, RF, connection established between a mobile device and said electronic lock, further being adapted to use the harvested energy for processing an authorization token received from the mobile device via said RF connection, further being adapted to use the harvested energy for controlling an unlocking switch in dependence on a result of said processing, wherein the unlocking switch is an electronic switch that does not require more power than the energy harvested from the RF connection further being adapted to process the authorization token by transmitting the authorization token to an authorization server via a further RF connection, further being adapted to control the unlocking switch by enabling the unlocking switch upon or after receipt of a response indicative of a positive verification of the authorization token from the authorization server, said electronic lock comprising a low-power RF transceiver (LpRF) which is adapted to establish the further RF connection via a further antenna, wherein the low-power RF transceiver (LpRF) does not require more power than the energy harvested from the RF connection and wherein the unlocking switch and the low-power RF transceiver (LpRF) require no battery-supply power, comprising a primary antenna used only for communication with the mobile device via the RF connection, comprising a secondary antenna which is adapted to harvest the energy from the RF connection, wherein the secondary antenna is connected to an energy harvesting and energy storage unit, which is adapted to store the harvested energy, and comprising a secure element which is connected to the primary antenna and which is adapted to store the authorization token, to encrypt the authorization token before the electronic lock transmits the authorization token to the authorization server, and to decrypt the response from the authorization server.