QR code for SMS
Scanning opens the messaging app with your number and message ready to send. The classic use is keyword opt-in — "Text JOIN to subscribe" becomes a single scan-and-send.
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How to get the most from a sms QR code
SMS QR codes shine where internet is unreliable or the audience skews away from smartphapps — an SMS goes through on any signal. They are also the cheapest bridge from print to a database you own: a keyword arriving at your number is a subscription event with a phone number attached.
Keep the pre-filled message to a single short keyword. People will send exactly what you pre-type, so make it something your system can parse unambiguously.
Frequently asked questions
Does the person get charged?
Standard SMS rates from their carrier apply, exactly as if they typed the message themselves. Most Indian plans include unlimited SMS.
Can the message be edited before sending?
Yes — the scan only pre-fills the compose screen. Nothing sends until they press send.
iPhone and Android both?
Yes, the SMSTO format is recognised by both camera apps.