A biometric sensor module (200;300;400;500;600) for detecting a biometric feature of a user, the biometric sensor module being configured for integration into an opening of a card comprising a bendable main body, the biometric sensor module comprising a biometric sensor comprising an array of capacitive sensing elements for acquiring sensing signals indicative of a biometric feature of a user, the array of sensing elements arranged facing towards a front side of the biometric sensor; a bottom flexible film attached to a back side, opposite the front side, of the biometric sensor, the bottom flexible film carrying at least one electrically conductive line adapted to flex with the bottom flexible film, and being electrically connected to the biometric sensor and electrically connectable to an external electrical circuit, the biometric sensor is attached to a first side of the bottom flexible film, the bottom flexible film further carrying at least one electrically conductive pad on a second side opposite the first side, at least one electrically conductive pad being electrically connected with at least one electrically conductive line, a top flexible film attached to the biometric sensor closer to the front side of the biometric sensor than the bottom flexible film, wherein the bottom flexible film includes a bent portion that includes a first bent portion so that part of a bent portion is arranged along side walls of the biometric sensor and a second bent portion that bends the bottom flexible film back to be parallel with the bottom flexible film at the back side, and such that the bottom flexible film is bent towards and attached to the top flexible film whereby the biometric sensor module is T-shaped with electrical connections on wings of the T-shaped biometric sensor module, the wings including portions of the bottom flexible film and the top flexible film where they are attached, and the wings are thinner than the main body of the biometric sensor module where the biometric sensor is located, wherein at least one of the electrically conductive lines that is connected with the biometric sensor is bent conformally with the first and second bent portions to reach the wings of the module. a biometric sensor comprising an array of capacitive sensing elements for acquiring sensing signals indicative of a biometric feature of a user, the array of sensing elements arranged facing towards a front side of the biometric sensor; a bottom flexible film attached to a back side, opposite the front side, of the biometric sensor, the bottom flexible film carrying at least one electrically conductive line adapted to flex with the bottom flexible film, and being electrically connected to the biometric sensor and electrically connectable to an external electrical circuit, the biometric sensor is attached to a first side of the bottom flexible film, the bottom flexible film further carrying at least one electrically conductive pad on a second side opposite the first side, at least one electrically conductive pad being electrically connected with at least one electrically conductive line, a top flexible film attached to the biometric sensor closer to the front side of the biometric sensor than the bottom flexible film, wherein the bottom flexible film includes a bent portion that includes a first bent portion so that part of a bent portion is arranged along side walls of the biometric sensor and a second bent portion that bends the bottom flexible film back to be parallel with the bottom flexible film at the back side, and such that the bottom flexible film is bent towards and attached to the top flexible film whereby the biometric sensor module is T-shaped with electrical connections on wings of the T-shaped biometric sensor module, the wings including portions of the bottom flexible film and the top flexible film where they are attached, and the wings are thinner than the main body of the biometric sensor module where the biometric sensor is located, wherein at least one of the electrically conductive lines that is connected with the biometric sensor is bent conformally with the first and second bent portions to reach the wings of the module.