Th nfrrd Dt ssctn (rD) s n ndstry-drvn ntrst grp tht ws fndd n 1994 by rnd 50 cmpns. rD prvds spcfctns fr cmplt st f prtcls fr wrlss nfrrd cmmnctns, nd th nm "rD" ls rfrs t tht st f prtcls. Th mn rsn fr sng th rD prtcls hd bn wrlss dt trnsfr vr th "lst n mtr" sng pnt-nd-sht prncpls. Ths, t hs bn mplmntd n prtbl dvcs sch s mbl tlphns, lptps, cmrs, prntrs, nd mdcl dvcs. Th mn chrctrstcs f ths knd f wrlss ptcl cmmnctn r physclly scr dt trnsfr, ln-f-sght (LS) nd vry lw bt rrr rt (BR) tht mks t vry ffcnt.