Iyini i-QR Code Futhi Isebenza Kanjani?

I-QR Code (Quick Response Code) iyi-barcode ye-2D eyisikwele eyakhiwe ngamabhokisi amancane amnyama namhlophe. Ngokungafani ne-barcode enemigqa egcina izinombolo ezingaphezudlwana kweshumi kuphela, i-QR Code ingagcina isixhumanisi sewebhusayithi, umbhalo omude, inombolo yocingo, imininingwane yokuxhumana, kuze kufike kudatha yenethiwekhi ye-WiFi.

I-QR Code yasungulwa ngo-1994 yi-Denso Wave, inkampani yase-Japan, ukuze kulandelelwe izingxenye zezimoto efektri. Namuhla i-QR Code isetshenziswa yonke indawo, kusukela ekukhokheni ngedijithali kuya kumenyu yezindawo zokudlela, ngoba ingaskenwa ngqo ngekhamera yefoni.

Izingxenye ze-QR Code

Amabhokisi amathathu amakhulu emakhoneni (finder pattern): asiza ikhamera ukuthi ithole i-QR Code futhi yazi ukuthi ibheke kuphi, ngakho i-QR Code isafundeka noma iskenwa ithambekile noma ibheke phansi.
Iphethini yokuqondanisa (alignment pattern): ibhokisi elincane elisiza ukufunda i-QR Code egobile noma ebonwa ngasohlangothini.
Indawo yedatha: amabhokisi amancane aqukethe ulwazi enilugcinile.
Indawo ethule (quiet zone): isikhala esingenalutho esizungeze i-QR Code ukuze kube lula ukuyihlukanisa nengemuva.

Ingagcina idatha engakanani?

I-QR Code inezinhlobo zosayizi ezingu-40. Uhlobo olukhulu kakhulu lungagcina izinombolo ezifika ku-7,089 noma cishe ama-byte angu-2,953 edatha. Empeleni, lapho idatha egciniwe incane, amabhokisi aba makhulu futhi kuba lula ukuskena i-QR Code. Ngakho-ke, isixhumanisi esifushane singcono kunesixhumanisi eside kakhulu.

I-QR Code ngayinye yakhiwe ngamabhokisi amancane amnyama namhlophe.Isithombe: Mitya Ivanov

Isafundeka noma yonakele

I-QR Code isebenzisa ukulungiswa kwamaphutha (error correction). Kunamazinga amane:

L: idatha isengabuyiswa uma cishe u-7% we-QR Code wonakele.
M: cishe u-15%. Lokhu kuyisinqumo esivamile nesilinganiselayo.
Q: cishe u-25%.
H: cishe u-30%, ilungele i-QR Code ezofakwa uphawu (logo) noma ezophrintwa endaweni engcola kalula.

Lapho izinga lokulungisa liphezulu, kudingeka amabhokisi amaningi, ngakho iphethini ye-QR Code ibukeka iminyene kakhulu.

Yini engagcinwa ku-QR Code?

Isixhumanisi sewebhusayithi, isitolo se-inthanethi, noma ifomu.
Idatha ye-WiFi, ukuze izivakashi zixhume ngaphandle kokuthayipha iphasiwedi. Bhekani umhlahlandlela we-QR Code ye-WiFi.
Ikhadi lebhizinisi ledijithali (vCard), i-imeyili, i-SMS, nengxoxo ye-WhatsApp.
Indawo emephini nohlelo lomcimbi.

I-QR Code emile neguqukayo

I-QR Code eyenziwe ngqo kusukela kudatha ibizwa ngokuthi yi-QR Code emile: okuqukethwe kwayo kufakwe esithombeni futhi akunakushintshwa, kodwa futhi ayiphelelwa yisikhathi neze. I-QR Code eguqukayo iqukethe isixhumanisi esifushane sesevisi ethile bese iyisa umuntu lapho nifuna khona; indawo eya kuyo ingashintshwa, kodwa i-QR Code izofa uma leyo sevisi iyeka. Ezidingweni eziningi, i-QR Code emile yanele futhi iphephe kakhudlwana esikhathini eside.

Ningathanda ukuzama? Yenzani i-QR Code mahhala manje, noma nifunde indlela yokwenza i-QR Code ngezinyathelo ezi-3.

Imibuzo Evame Ukubuzwa

Ingabe i-QR Code ingaphelelwa yisikhathi?

I-QR Code emile (static) ayiphelelwa yisikhathi neze ngoba idatha yayo ifakwe ngqo esithombeni. I-QR Code eguqukayo (dynamic) ingayeka ukusebenza uma isevisi ehlinzeka ngesixhumanisi sayo iyeka noma ukubhaliselwa kuphela.

Ingakanani idatha i-QR Code engayigcina?

Uhlobo olukhulu kakhulu lwe-QR Code lungagcina izinombolo ezifika ku-7,089 noma cishe ama-byte angu-2,953. Nokho, lapho idatha incane, kuba lula ukuskena i-QR Code.

Ingabe i-QR Code isafundeka uma ingxenye yayo yonakele?

Yebo. Ngenxa yokulungiswa kwamaphutha, i-QR Code isafundeka noma cishe u-7% kuya ku-30% wayo wonakele, kuya ngezinga lokulungisa elingu-L, M, Q, noma H elisetshenzisiwe.