A QR code is just data printed as pixels — it cannot expire. What can stop working is the destination behind it: a dynamic QR code points at a redirect service that might shut down, and a plain link dies if the target page does. Codes you generate locally with plain content keep working forever.

Are QR codes safe to scan?

The code itself is inert; the risk is where a URL points. Attackers print codes that lead to phishing sites, so treat a decoded link like any unknown link — read it before opening. Using a scanner that shows you the destination first, instead of jumping straight to the browser, is the safe habit.

What is the difference between static and dynamic QR codes?

A static code encodes the final content directly — a URL, Wi-Fi credentials, text — and works forever. A dynamic code encodes a short redirect URL owned by the service that made it, letting the destination be changed later; it works only as long as that service exists, and it tracks every scan.

How much data can a QR code hold?

Up to about 4,300 characters in the largest version at the lowest error-correction level. The practical limit is much lower: every extra character adds modules, making the code denser and harder to scan — keep payloads short, especially for print.

Khoutu ya QR ke Eng?

Dithamalakane tseo tsa sekwere sa bontsho le bosweu mo dimenyung, diphousetara le dipasa tsa go palama di ka paka kgokagano, dintlha tsa boitshupo tsa Wi-Fi kgotsa thekete mo disentimetareng di le mmalwa tsa sekwere. Mona ke kamoo di sebetsang kateng — le kamoo o ka di bōpang le ho di skena ntle le ho tshwarwa.

Dipiksele jaaka tshedimosetso

Khoutu ya QR — Khoutu ya Tsibogo ka bonako, e e tlhamilweng ka 1994 ke Denso Wave ya go latedisa dikarolo tsa koloi — ke khoutu ya dibara e e nang le dikarolo tse pedi. Moo khoutu ya bogologolo ya lebenkele le legolo e bolokang dinomoro di le lesome le bobedi mo tekanyong e le nngwe, khoutu ya QR e boloka tshedimosetso mo pedi ditekanyo: keriti ya batho ba batsho le ba basweu dimmojule, e mong le e e nyenyane. Ke ka moo khoutu ya QR e ka tshwarang ditlhaka di le diketekete go na le dinomoro di le lesome le bobedi.

Ya data e ka ba ntho efe kapa efe eo di-byte di ka emela: URL, mongolo o tlwaelehileng, dintlha tsa ho ikopanya, dintlha tsa Wi-Fi, esita le difaele tsa binary ka kgopolo. Sekenara se bala keriti, se aga di-byte sesha le go di ranola.

Popego ya khoutu ya QR

Matshwao a mararo a a bonwang a dira gore khoutu ya QR e kgone go tlhalosiwa go tswa mo letlhakoreng lengwe le lengwe:

Ntlha	Kae	Seabo
Diphethene tsa sebatli	Dikwere tse tharo tse dikgolo tsa sekhutlo	Dira gore sekenara se bone khoutu le gore e eme kae
Paterone ya go tlhamalatsa	Sekwere se sennye, lefelo le le kwa tlase ka fa mojeng	E baakanya go sokamisiwa ga lense mo difatlhegong tse di kobegileng
Paterone ya nako	Mola o o refosanang fa gare ga dibatli	E seta ditekanyetso tsa keriti ya mmojule
Lefelo le le didimetseng	Molelwane o mosweu go dikologa	E kgaoganya khoutu le tikologo ya yone — karolo ya maemo, o se ka wa e kgaola
Tshedimosetso le paakanyo ya diphoso	Sengwe le sengwe se sengwe	Morwalo wa tuelo, o o tsenngwang mo gare ga go tlhoka tiro

Ho na le 40 "mefuta" - boholo ho tloha 21 × 21 ho 177 × 177 dimmojule. Bigger versions hold more data; a typical URL lands around version 3–5.

Goreng dikhoutu tse di senyegileng di sa ntse di sekasekwa

Dikhoutu tsa QR tse di tsenngwang Paakanyo ya diphoso tsa Reed–Solomon — dipalo tse tshwanang tse sireletsang di-CD le di-probe tsa sebaka se tebileng. Ho fihlela ho karolo e itseng ya dimmojule tse senyehileng, decoder e aga botjha ya data e haellang ho ena le ho hloleha. Maemo a mane a kgwebisano bokgoni jwa go itsetsepela:

L - e busetsa ~ 7% ya tshenyo; khoutu e e kitlaneng go gaisa.
M - ~15%; thulaganyetsoruri ya letsatsi le letsatsi.
Q - ~25%; e siametse go gatisiwa e e tla tshwarwang.
H - ~30%; e go letla go itaya letshwao mo gare, e falola difatlhego tse di makgwakgwa.

Seno ke sone gape se dikhoutu di itshokelang go apesiwa ga letshwao: fa fela tshenyo e nna ka fa tlase ga tekanyetsokabo ya go tsosolosa, morwalo wa tuelo o nna o sa senyega.

Dikhoutu tse di sa fetogeng kgatlhanong le tse di fetogang

A se sa fetogeng Khoutu ya QR e tsenya diteng tsa bofelo ka tlhamalalo. E sebetsa ka ho sa feleng, ha e bitse letho, ha e latele letho — fetola sebaka seo o yang teng mme o hatisa khoutu hape. A matlhagatlhaga khoutu e tsenya khoutu ya URL e khutshwane ya go kaela gape e e nang le tirelo ya QR: tirelo e kwala skene nngwe le nngwe mme e ka supa gape lefelo le e yang kwa go lone moragonyana. E mosola mo matsholong, mme e oketsa go ikaega (tirelo e tshwanetse go nna e tshela), go latedisa sephiri, mme gantsi le peeletso. Ya rona Jenereitara ya QR e hlahisa feela dikhoutu tse sa fetoheng — ha ho letho le fellwang ke nako, ha ho letho lifono lapeng.

Se batho ba se tsenyang mo teng

Di-URL - diphousetara, likarete tsa kgwebo, ambalaji.
Wi-Fi — WIFI:S:name;T:WPA;P:password;; fomete e kopanela le neteweke ka scan; jenereithara ya rona e go agela yone.
Dikarata - karata ya go ikopanya mo scan e le nngwe.
Imeile, mogala, SMS - pele e tlatsa skrine tlhama.
Dituelo le ditekete — ditshaeno tsa nako e le nngwe, ke ka moo dikhoutu tseo di sa tshwanelang go dirisiwa gape kgotsa go tsewa dinepe ke batho ba o sa ba itseng.

Go sekaseka ka pabalesego (go tlhotlhora)

Ka gonne khoutu ke kgokagano fela e mongwe a e gatisitseng, batlhasedi le bone ba a di dirisa — mokgwa ono o bile o na le leina, . go tlhotlhora (go tsietsa ka QR). Ditikara tse di tshwailweng mo godimo ga dikhoutu tse di kafa molaong mo dimitara tsa go paka, dikhoutu mo diimeileng tse di isang kwa ditsebeng tsa go kotula dintlha tsa boitshupo: founo e bula lefelo le e yang kwa go lone e sa bonale, mme ke yone kotsi.

Dirisa sekenara se se e bontsha diteng tse di tlhalositsweng pele e bulwa — jaaka Sekenara sa QR mo saeteng eno — go na le e e tlolelang ka tlhamalalo kwa sebatling.
Bala kgolagano ya dikhomphiutha ka kelotlhoko: paypa1.com ga se PayPal.
Belaela thata dikhoutu tse di gorogang go khurumetsa dikhoutu tse dingwe, kgotsa tse di batlang go tsena fela fa o sena go sekaseka.

A o amogetse khoutu ya QR jaaka setshwantsho? E tlhalose o sa e tshepe: Sebadi sa QR e bontsha diteng tse di tala tsa setshwantsho sengwe le sengwe, mo lefelong la gaeno, pele ga o bula sengwe le sengwe.

Ithute go le gontsi

Tlhama e le nngwe: Jenereitara ya khoutu ya QR (dikgokagano, Wi-Fi, imeile, SMS - PNG jarolla).
Buisa e le nngwe ka tlhamalalo: the Sekenara sa QR ka khamera ya gago, kgotsa mmadi go bona ditshwantsho.
A o batla go itse ka diaterese tse di mo teng ga dikgokagano tsa QR? Simolola ka aterese ya IP ke eng.

FAQ

Dipotso tsa khoutu ya QR

A dikhoutu tsa QR di felelwa ke nako?

Khoutu ya QR ke tshedimosetso fela e e gatisitsweng jaaka dipikselse — ga e ka ke ya felelwa ke nako. Se se ka emisang go dira ke lefelo le le ka fa morago ga yone: khoutu ya QR e e fetogang e supa tirelo ya go kaela gape e e ka nnang ya tswalwa, mme kgokagano e e tlwaelegileng e a swa fa tsebe e e ikaeletsweng e dira jalo. Dikhoutu tse o di tlhagisang mo lefelong la gaeno ka diteng tse di tlwaelegileng di nna di dira go ya go ile.

A dikhoutu tsa QR di babalesegile go di sekaseka?

Khoutu ka boyone ga e dire sepe; kotsi ke fa URL e supang teng. Batlhasedi ba gatisa dikhoutu tse di isang kwa mafelong a phishing, ka jalo tshwara kgokagano e e tlhalositsweng jaaka kgokagano epe e e sa itsiweng — e bale pele o e bula. Go dirisa sekenara se se go bontshang kwa o yang teng pele, go na le go tlolela ka tlhamalalo kwa sebatling, ke mokgwa o o babalesegileng.

Pharologanyo ke eng fa gare ga dikhoutu tsa QR tse di sa fetogeng le tse di fetogang?

Khoutu e e sa fetogeng e tsenya diteng tsa bofelo ka tlhamalalo — URL, dintlha tsa boitshupo tsa Wi-Fi, sekwalwa — mme e dira ka bosakhutleng. Khoutu e e fetogang e tsenya khoutu ya URL e khutshwane ya go kaela gape e e leng ya tirelo e e e dirileng, e letla gore lefelo le le yang kwa go lone le fetolwe moragonyana; e dira fela fa fela tirelo eo e le teng, mme e latedisa skene nngwe le nngwe.

Khoutu ya QR e ka tshola tshedimosetso e e kana kang?

Go fitlha go ditlhaka di ka nna 4 300 mo mofuteng o mogolo go gaisa mo maemong a a kwa tlase a go baakanya diphoso. Moedi o sebetsang o tlase haholo: semelo se seng le se seng se eketsehileng se eketsa dimmojule, se etsa hore khoutu e be kitlane mme e be thata ho e hlahloba — boloka di-payloads di le khutšoanyane, haholo-holo bakeng sa ho hatisa.