精选优质文档-倾情为你奉上2019年高考英语全国卷I解析版C篇As data and identity theft becomes more and more common, the market is growing for biometric(生物测量)technologies like fingerprint scans to keep others out of private e-spaces. At present, these technologies are still expensive, though.Researchers from Georgia Tech say that they have come up with a low-cost device(装置)that gets around this problem: a smart keyboard. This smart keyboard precisely measures the cadence(节奏)with which one types and the pressur