Method for unlocking a radio lock (10) with a radio key (20), wherein the radio lock (10) and the radio key (20) communicate with each other without user intervention, characterized in that - with a capacitive sensor, which forms at least part of the radio key (20), detects whether the radio key (20) is being held by the user, - the radio lock (10) will only be released if the radio key (20) is held and the radio key (20) is authorized to release the radio lock (10).