Abstract: An improved contactless sensing device comprises a cover plate, a case, a base, a light-guiding module, a printed circuit board, and two lateral plates. When the sensing device senses a credit card containing a specific tag, a plurality of second light-emitting elements on the two lateral plates emit light of specific colors. The light is displayed on a light-permeable sensing element of the cover plate through the light-guiding module and a second opening of the housing.

Abstract: An improved card-reading device comprises an input module, a message display panel, a pair of engaging elements, a shielding structure and an antenna module. The shielding structure is pivotally installed between the pair of engaging elements, such that the shielding structure can be swung to provide a shielding effect to a specific position of the card-reading device. The antenna module is installed inside the shielding structure and provided for sensing an object containing a specific tag.

Abstract: An improved elastic member structure of a magnetic head comprises: a base having a first and a second holder plates, a first through hole being formed on the first holder plate, and a gap being formed between the first and second holder plates; a fixing base plate being fixed onto the first holder plate and having a second through hole formed at the center, and the two sides of the second through hole comprising a third through hole respectively; an engaging elastic member being disposed onto the fixing base plate and having a fourth through hole formed at the center, and both ends of the engaging elastic member are passed through the third through holes respectively for fixing the engaging elastic member onto the fixed base plate; and a magnetic head module being passed into the first, second and fourth through holes for contacting a card and reading data.