The invention proposes a device for preparing a beverage from a food substance contained in a capsule (24) by injection of a liquid into the capsule (24), wherein said liquid is provided by a pump (70) of the device, said device comprising an extraction head (20) having an aperture (22) for inserting a capsule-holder (30) providing the capsule (24) to a capsule-holder receiving chamber (25) of the device, a closing mechanism (21) to selectively enclose said capsule (24) in the capsule-holder receiving chamber (25), at least one injection member (11) to supply a liquid received from the pump (70) to the inside of the capsule (24), a control unit (80) for controlling at least the pump (70) of the device, and decoding means (1) connected to the control unit (80) and designed to read information from the capsule-holder (30).