Michael John­son

Bloomberg Businessweek (North America) - - Global Tech -

Who doesn’t want a su­per­power? I started build­ing things a few years ago that fo­cus on sen­sory-based in­ven­tions: a ring de­vice that al­lows the wearer to ex­pe­ri­ence mag­netic fields as a vibration; an ul­tra­sonic walk­ing stick for the blind with sim­i­lar hap­tic feed­back; some pre­lim­i­nary work on ul­tra­sound hear­ing for echolo­ca­tion. And I’ve been work­ing to build a bat­tery that’s eas­ily con­structed, bulky, but very durable. Bat­ter­ies are an in­tensely dif­fi­cult thing to man­u­fac­ture well—the worst bat­tery you could buy in a store is a mar­vel of en­gi­neer­ing.

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