Ntawm no yog vim li cas koj yuav tsum nkag mus rau Cov Neeg Uas Muaj Cai Coj Los Ntawm Cov Chaw
Yog hais tias koj twb tau sim sau npe nrog lub website los sis tawm tswv yim ntawm ib lub blog thiab tau hais kom nkag rau qee tus cim vwm uas tau tag nrho jumbled, koj paub tias nws siab npaum li cas nws tuaj yeem yuav qhia rau qis dua L ntawm tus nab npawb 1 los sis ib qho loj ntawm O los ntawm ib tug xov tooj 0.
Kuv paub. Kuv tau nyob ntawd. Kuv tau zaum thiab peered ntawm lub computer screen sim kom paub tseeb tias qhov offset kab yuav tsum yog tus curl ntawm J los yog txoj kab ncaj ntawm ib qho I. Thiab kuv tau muttered nyob hauv kuv ua tsis taus pa li cas lawv yuav tsum cia li noj cov zoo li-saib cov tsiaj ntawv tawm ntawm algorithm los cawm kuv lub siab.
Yog li, cov ntawv vwm no yog dab tsi thiab yog vim li cas peb yuav tsum ntaus lawv hauv lub vev xaib mus rau pem suab?
CAPTCHA piav qhia
Cov vwm vwm no hu ua CAPTCHA, thiab lawv yog cov neeg kuaj mob. Lo lus no ua tau ib lo lus tseemceeb rau: "Kev Txhaum Qhib Sij Hawm Sibtham Tshaj Tawm kom Qhia Cov Kws Khoos Tsheej thiab Tib Neeg."
Qhov teeb meem tom qab vim li cas cov websites siv CAPTCHA cov cim rau hauv lawv cov ntawv sau npe yog vim yog spam. Cov vwm vwm no yog ib txoj hauv kev los xyuas yog tias tus neeg sau npe lossis tawm tswv yim los tawm tswv yim yog lub neej tiag tiag uas tsis yog rau kev siv computer los sim spam lub vev xaib. Yog, nws yog tib yam vim li cas peb feem ntau muaj qee tus ntawv thaiv kev rau ntawm peb tus email.
Spam yog lub caij niaj hnub sib npaug ntawm cov ntawv xa tawm. Tab sis, yog tias cov spammers nyob rau hauv them nyiaj, cov ntawv khoob khawm yuav tsis yog hauv koj lub thawv lossis khi rau ntawm koj lub qhov rooj qhov rooj. Nws yuav qiv koj cov mev, hle lub tsheb nres rau hauv koj lub tsheb, plaster txhua sab ntawm koj lub tsev, thiab npog koj lub ru tsev.
Thiab thaum nws muaj kev ntxhov siab tas mus li yuav raug nug kom nkag mus rau hauv cov tsiaj ntawv tangled los ntawm ib daim duab, nws zoo tsim nyog nws nyob rau hauv cov mus dhia ntev. Txhua tus neeg uas tau txhim kho lawv tus kheej lub website los yog blog yuav tau txais ib qho saj ntawm dab tsi spam yog li ze thiab tus kheej xwb lub lis piam tom qab mus hauv online - txawm tias qhov website lossis blog muaj ntxiv mus tsis muaj tsheb khiav los xij. Cov spammers nrhiav me ntsis cov websites thiab blogs yoo thiab tsom lawv vim lawv feem ntau tsis muaj kev ruaj ntseg ntau los tiv thaiv lawv.
Yog hais tias ib qho chaw lossis blog tus tswv tsis siv qee hom kev tiv thaiv zoo li CAPTCHA tawm tsam nws, lawv yuav tau txais kaum ob ntawm spam registrants los yog lus hauv ib hnub. Thiab qhov no tsuas yog rau cov websites me me thiab tus kheej blog uas tsis nrov heev. Kuv tuaj yeem xav txog tej yam zoo li cov blogs yuav tsum pom.
Yog li, tom ntej no koj khiav tawm ib qho ntawm cov dluab thiab tau me ntsis kev ntxhov siab sim qhia ib Q ntawm O, nco ntsoov tsis txhob cia siab rau koj lub siab nyob rau hauv lub website. Tsom nws rau cov kab lus, vim hais tias lawv yog vim li cas peb yuav tsum tau squint ntawm peb cov vijtsam yuav luag txhua zaus peb xav sau npe ntawm lub website tshiab.
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