By Marisa Torrieri, Contributing Editor

Sure, One-Time-Password (OTP) devices are cumbersome. But hackers are relentless and pervasive. What’s a U.S. bank with fussy consumers to do? One answer: in lieu of a dedicated OTP apparatus, issue credit cards with ultra thin batteries, specially designed for insertion into cards, and capable of driving powerful transactions … such as generating numeric passwords ala OTP.