Aaj kal QR codes har jagah dikhai dete hain - restaurants mein, products pe, visiting cards pe, posters pe. Lekin QR code aakhir hai kya? Is article mein main aapko QR codes ke baare mein sab kuch samjhaunga - bilkul simple Hindi mein.
QR Code Kya Hai?
QR Code ka full form hai "Quick Response Code". Ye ek tarah ka 2D barcode hai jo information store karta hai. Jab aap ise phone ke camera se scan karte hain, to wo information instantly aapke phone pe aa jati hai.
Simple Example: Socho ek magic box hai jisme ek link chhupa hai. Jab aap camera se dekhte ho, wo link khul jata hai - ye hai QR code!
QR Code Ki History
QR Code 1994 mein Japan ki company Denso Wave ne banaya tha. Initially ye automotive industry mein car parts track karne ke liye use hota tha. Aaj ye duniya bhar mein har jagah use hota hai.
QR Code Kaise Kaam Karta Hai?
QR code mein information black aur white squares (modules) ke pattern mein encode hoti hai:
- 1.Position Detection Patterns: 3 corners pe bade squares hote hain - ye scanner ko batate hain ki QR code kahan hai
- 2.Data Modules: Beech ke patterns mein actual data encoded hota hai
- 3.Error Correction: Extra data jo thoda damage hone pe bhi QR code kaam karne deta hai
QR Code Ke Types
1. Static QR Code
Ek baar bana ke fix ho jata hai. Content change nahi kar sakte. FREE hota hai. Best for: permanent links, contact info.
2. Dynamic QR Code
Content baad mein change kar sakte hain bina QR code reprint kiye. Analytics bhi milti hai. Usually paid hota hai.
QR Code Mein Kya Store Kar Sakte Hain?
Website URL
Koi bhi website link
UPI Payment
Payment receive karne ke liye
WhatsApp/SMS
Direct message link
WiFi
Auto-connect credentials
vCard
Digital visiting card
Location
Google Maps location
Barcode vs QR Code - Kya Difference Hai?
| Feature | Barcode | QR Code |
|---|---|---|
| Dimension | 1D (lines) | 2D (squares) |
| Data Capacity | ~20 characters | ~4000 characters |
| Scan | Special scanner | Phone camera |
| Use Case | Products | Everything |
QR Code Kaise Scan Karein?
QR code scan karna bahut easy hai:
- 1. Phone ka camera app kholein
- 2. Camera ko QR code pe point karein
- 3. Automatically detect ho jayega aur link show hoga
- 4. Link pe tap karke kholein
Agar camera se detect nahi ho raha, to Google Lens ya koi QR Scanner app use kar sakte hain. Ya phir QRvala Scanner use karein.
Apna Pehla QR Code Banaye - FREE!
Ab jab aap samajh gaye QR code kya hai, to apna pehla QR code banaiye
QR Code Generator