Menene captcha? Kusan daga farkon Intanet, masu amfani suna fuskantar irin wannan abu kamar captcha ko CAPTCHA. Koyaya, ba kowa ya san menene ba kuma me yasa ake buƙatarsa.
A cikin wannan labarin, za mu bincika abin da ake nufi da captcha da kuma menene rawar sa.
Menene ma'anar captcha
Captcha gwajin kwamfuta ne a cikin sigar saitin haruffa masu dacewa waɗanda aka yi amfani dasu don ƙayyade ko mai amfani ɗan adam ne ko kwamfuta.
Misali, ana iya tambayarka ka shigar da haruffan da aka nuna a hoto kusa da su cikin zaren. A wani yanayin, mutum yana buƙatar yin aikin lissafi mai sauƙi ko nuna hotunan da aka nema tare da tsuntsaye.
Dukkanin wasanin gwada ilimi na sama ana kiran su da gaske CAPTCHA.
A cikin kalmomi masu sauki, kalmar captcha analokaci ne na yaren Rasha na takaita Ingilishi "CAPTCHA", wanda ke nufin gwaji na musamman don bambance ainihin masu amfani da kwamfutoci (mutummutumi).
Captcha kariya ne daga spam ta atomatik
Captcha yana taimakawa kariya daga saƙonnin spam, rijistar jama'a akan shafukan yanar gizo, satar bayanan yanar gizo, da dai sauransu.
A matsayinka na ƙa'ida, sakewarwar da CAPTCHA ya bayar kowane mutum zai iya warware shi ba tare da wata matsala ba, yayin da wannan aikin ba zai yiwu ga kwamfuta ba.
Mafi yawanci, ana amfani da haruffa ko takaddun dijital, wanda akan nuna alamun rubutun tare da wasu ƙyalli da tsangwama. Irin wannan katsalandan yakan bata masu amfani rai, amma suna taimakawa don kare amintattun albarkatun Intanet daga hare-haren gwanin kwamfuta.
Tunda mutum ba koyaushe yake gudanar da karanta captcha ba, mai amfani zai iya sabunta shi, sakamakon haka hadewar alamomi daban zai bayyana akan hoton.
A yau, abin da ake kira "reCAPTCHA" sau da yawa ana cin karo da shi, inda mai amfani kawai ke buƙatar saka "tsuntsu" a cikin filin da aka keɓance, maimakon shigar da haruffa da lambobi.
