MasterCard, Visa and American Express are promoting contactless versions of their credit cards, which only need to be held near a special reader at the checkout counter for a sale to go through, making the standard card swiper no longer necessary.
Filters in a new and used cigarette. Cigarette filters are an essential non-tobacco part of a filter cigarette, and have a profound effect on the yield and composition of cigarette smoke. The filter may be made from cellulose acetate fibre, paper or activated charcoal.
A filter is a device through which a substance is passed when it is being filtered. ...a paper coffee filter. A filter is a device through which sound or light is passed and which blocks or reduces particular sound or light frequencies. You might use a yellow filter to improve the clarity of a hazy horizon. 4.