Credit where credit's due

 作者:巫马锄     |      日期:2019-03-06 09:07:08
By Barry Fox Privicom of Chevy Chase in Maryland wants to make buying by phone easier (WO 00/08772). Having to read out your credit card details takes time and they may be overheard. Privicom’s card reader, small enough to be carried in a wallet or purse, has a magnetic head, audio amplifier and speaker. You hold the reader to a phone while swiping the card through a slot. A burst of beeps travels down the line and is decoded at the other end by a matching sensor,