QR code kitne types ke hote hain?
QR code ek 2D barcode hai jo information store karta hai — phone camera se scan karne par directly open ho jaata hai. Alag-alag uses ke liye alag QR types banate hain:
- URL QR: Website link — marketing, visiting card, menu
- UPI QR: Payment — shop counter, WhatsApp, Instagram bio
- WiFi QR: Network name + password — guests ko easily connect karna
- WhatsApp QR: Direct chat link — customer support, business
- Plain text QR: Contact info, address
Business mein QR code kaise use karein
Shop counter par UPI QR
UPI QR generate karein → print karein → counter par lagayein. Customer scan karke directly pay karta hai — PhonePe, GPay, Paytm — sab apps se.
Menu ya product info QR
URL QR generate karein apne menu/catalogue link ka → table par print karein. Customer bina staff ke dekh sakta hai.
WhatsApp business QR
WhatsApp link QR → Instagram bio ya poster mein lagayein → customers directly WhatsApp par message kar sakte hain.
Print ke liye
QR code print karne ke liye high resolution download karein — minimum 300 DPI. Print karne ke baad scan test zaroor karein before use.
QR code expire hota hai?
Static QR (URL, UPI) expire nahi hota — hamesha valid rehta hai jab tak destination URL/UPI active hai. Dynamic QR (paid services) tracking ke liye different hote hain.
Kya QR code se payment safe hai?
Haan — UPI QR scan karne se sirf payment initiate hota hai. Aapka bank account number, password — kuch share nahi hota. Lekin QR scan karne ke baad amount verify karein before confirm.