s ▁its ▁stri pe ▁finger print ▁sensor . ▁The ▁Sign ature ▁devices ▁are ▁available ▁in ▁slightly ▁different ▁configurations : ▁Sign ature ▁L ite ▁( Standard ▁version ), ▁Sign ature ▁( with ▁self - dest ruct ) ▁and ▁Sign ature ▁Enter prise ▁( with ▁manage ability ). ▁They ▁have ▁a ▁rub ber ▁co ating ▁in ▁common ▁which ▁after ▁some ▁time ▁gets ▁un ple as antly ▁stick y ▁but ▁prevents ▁that ▁finger print s ▁can ▁be ▁taken ▁off ▁the ▁device ▁easily . ▁The ▁IDE A ▁devices ▁aren ' t ▁co ated . ▁ ▁Man ufact urer ' s ▁security ▁statement ▁The ▁bi ometric ▁USB ▁hardware ▁is ▁encryption ▁couple d ▁with ▁dual ▁finger print ▁authentication ▁method ology ▁to ▁prevent ▁crack ers ▁by pass ing ▁the ▁encryption . ▁D ual ▁finger print ▁authentication ▁function ▁ ▁increases ▁the ▁difficulty ▁for ▁crack ers ▁and ▁prevents ▁access ▁from ▁the ▁outside ▁into ▁the ▁secured ▁non - vol atile ▁internal ▁memory ▁storage . ▁Sign ature ▁is ▁designed ▁so ▁that ▁the ▁encryption ▁key ▁is ▁stored ▁randomly ▁in ▁the ▁flash ▁memory . ▁If ▁it ▁were ▁crack ed , ▁a ▁ ▁self ▁destruct ▁feature ▁will ▁trigger ▁it ▁to ▁re format ▁and ▁destroy ▁all ▁data ▁stored ▁in ▁the ▁device . ▁ ▁H acker ' s ▁security ▁statement ▁At ▁least ▁the ▁Sign ature ▁devices ▁use ▁a ▁weak ▁inter - ch ip ▁protocol : ▁The ▁device ▁does ▁properly ▁encrypt ▁the ▁data ▁but ▁an ▁attack er ▁with ▁some ▁sol der ing ▁and ▁some ▁basic ▁IO ▁and ▁coding ▁ab ilities ▁is ▁able ▁to ▁tell ▁the ▁device ▁that ▁it ▁received ▁two