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How to create a simple WiFi QR code scan

2024/10/17 Edited to

... Read moreหลายคนทักมาว่า “อยากทำ QR Code WiFi ไว้ติดหน้าบ้าน/ร้าน แต่ไม่อยากพิมพ์รหัสให้คนอื่นเห็น” เราใช้วิธีทำ QR ให้สแกนแล้วเข้า Wi‑Fi ได้ทันที สะดวกมาก โดยเฉพาะตอนมีแขกมา หรือที่ทำงานมีคนถามรหัสบ่อยๆ 1) ก่อนทำ QR ต้องมีข้อมูลอะไรบ้าง - ชื่อเครือข่าย (SSID) เช่น Nattanit_5G - รหัสผ่าน (Password) - ประเภทความปลอดภัย (ส่วนใหญ่เป็น WPA/WPA2) 2) วิธีดู “รหัสไวไฟบ้าน” จากเครื่องที่เคยต่อไว้แล้ว กรณีมือถือ/คอมเคยเชื่อมต่อ WiFi นี้มาก่อน จะดูรหัสได้ง่ายกว่าการเดา - Android (หลายรุ่น): ไปที่ การตั้งค่า > เครือข่ายและอินเทอร์เน็ต > Wi‑Fi > แตะชื่อ WiFi ที่ต่ออยู่ > แชร์ (Share) ระบบจะโชว์ QR และบางรุ่นจะขึ้นรหัสเป็นตัวหนังสือให้เลย - iPhone: iOS รุ่นใหม่สามารถ “แชร์รหัส” ให้ iPhone อีกเครื่องได้ แต่ถ้าจะดูเป็นตัวอักษรตรงๆ มักต้องดูจากเราเตอร์หรือในหน้าตั้งค่าเราเตอร์ - Windows 10/11: Control Panel > Network and Sharing Center > Change adapter options > คลิกขวา Wi‑Fi > Status > Wireless Properties > แท็บ Security > ติ๊ก Show characters (จะเห็นรหัส) 3) วิธีสร้าง QR Code WiFi (ใช้งานได้จริง) ตัวเลือก A: ทำผ่าน Canva (เหมาะกับคนอยากจัดหน้าตาสวยๆ) - เปิด Canva แล้วสร้างงาน (เช่น A6 หรือโพสต์) - ไปที่ Apps/แอป > ค้นหา “QR Code” - จุดสำคัญ: ฟีเจอร์ QR ใน Canva มักเป็น “ลิงก์ QR” ถ้าต้องการให้สแกนแล้วเข้ารหัส WiFi ทันที ให้ใช้ “WiFi QR generator” ก่อน แล้วค่อยเอารูป QR ที่ได้มาใส่ใน Canva อีกที ตัวเลือก B: สร้างผ่านเว็บ WiFi QR Code Generator - เปิดเว็บสร้าง QR (เช่นแนวๆ wifi qr code generator หรือเว็บไทยของ qr-code-generator) - เลือกประเภทเป็น WiFi - กรอก SSID, Password และเลือก WPA/WPA2 - กด Generate แล้วดาวน์โหลดเป็น PNG/SVG 4) ทริคที่เราใช้ให้สแกนติดง่าย - พิมพ์ QR ขนาดไม่น้อยกว่า ~3–4 ซม. (ยิ่งติดหน้าร้านยิ่งควรใหญ่) - ใส่ข้อความกำกับใต้ QR เช่น “สแกนเพื่อเชื่อมต่อ Wi‑Fi” และใส่ชื่อเครือข่าย (SSID) เผื่อบางเครื่องสแกนไม่ขึ้น - หลีกเลี่ยงการแปะบนพื้นผิวสะท้อนแสง/มุมมืด 5) เรื่องความปลอดภัยที่ควรรู้ - ถ้าเป็น WiFi สำหรับแขก แนะนำแยก Guest Wi‑Fi หรือเปลี่ยนรหัสเป็นระยะ - อย่าใช้รหัสเดียวกับอุปกรณ์สำคัญในบ้าน/ร้านทั้งหมด ทำเสร็จแล้วลองสแกนด้วยมือถือ 2–3 รุ่นก่อนเอาไปติดจริง แค่นี้ก็ไม่ต้องมาคอยบอกรหัส WiFi บ้านให้ใครซ้ำๆ แล้วค่ะ

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