aam taur par dendaari lekhon ke karmiyon dvaara gban rokane ke liye, durupayog ke khilaaf vividh jaanch maujood hain. kartavyon ka pruthakkaran ek aam niyantran hai. lagbhag sabhi companiyon mein check ke sansaadhan aur mudran ke liye ek junior karmachaari aur check ke punareekshan aur us par hastaakshar karne ke liye ek varishth karmachaari hota hai. aksar, lekhaankan software pratyek karmachaari ko keval unhein saunpe gaye kaarya ko nishpaadit karne tak hi seemit karte hain, taaki aisa koi jriya maujood na ho, jisse koi karmachaari - niyantrak bhi - akele koi bhugataan kar paae.
prativedan ke liye engineer digital system ke prakaaron par vichaar karte hain. adhikaansh digital system "sanyojan system" aur "anukramik system" mein vibhaajit ho jaate hain. sanyojan pranaali mein hamesha jo input diya jaata hai vahi aautaput vah deta hai. yeh mool roop se laujik prakriya ke set ka pratinidhitv karta hai aur jiski charcha pehle hi ki ja chuki hai.
lekin, January 2009 mein saims club ne paalan na karne par lagne vaale jurmaane ko kaafi kam kar diya, jise usane prati pailet $2 se ghataakar sirf 12 seint prati pailet kar diya. Wall-Mart ka anumaan hai ki saims ke liye khud taiging karne par prati pailet 12 seint ka kharcha aaega. saims ne yeh bhi ghoshana ki ki pailet-stareeya taiging ko 2010 mein poori shrrunkhala bhar mein shuroo kiye jaane ki ummeed hai, jabki vyaktigat vastu par taiging ki samay seema "vichaaraadheen" hai.
2002 ke baad se taaipei, taaivaan mein parivhan pranaali, kiraaya sangrah ke liye RFID sanchaalit card ka upayog karti hai. iji card ko sthaaneeya suvidha store aur metro stationon par chaarj kiya ja sakta hai aur metro, bason aur parking mein istemaal kiya ja sakta hai. upayog ko bhavishya mein taaivaan ke sampoorn taapoo mein laagoo karne ki yojana hai.

tambaakoo aur anya nasheele padaarthon ke istemaal ke beech sambandhon ko achhi tarah se sthaapit kiya gaya hai, lekin is saahacharya ki prakruti aspasht bani hui hai. do mukhya siddhaant fenotaaipik kaaryakaaran sambandh (getave) model aur sahasambaddh daayitv model hain. kaaryakaaran sambandh model ka tark hai ki dhoomrapaan bhavishya mein nasheeli davaaon ke prayog ka ek praathamik prabhaav daalata hai,[102] jabki sahasanbaddh daayitv model ka tark hai ki dhoomrapaan aur anya nasheeli davaaon ke prayog aanuvanshik ya paryaavaraneeya kaarakon se nirdisht hain.[103]

kuchh pranaaliyon mein yadi digital deta ka ek bhaag lupt ho jaae ya galat tareeke se vyavahrut hon, to sambandhit deta ke vishaal khandon ka arth poori tarah se badal sakta hai. kyonki kleef ifekt ke kaaran, upayogakartaaon ke liye bataana mushkil hai ki koi vishisht system vifalta ke kagaar par sahi tha ya fir vah asafal hone se pehle bahut adhik shor ko sahan kar sakta hai ya naheen.
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