Airtel Bangladesh has launched a QR code-based campaign. Under this campaign, Airtel customers will have access to Airtel's products and services that are best suited for their voice and data usage pattern. Airtel users can now scan a QR code using their mobile device and the Airtel Tong platform at the back-end will instantaneously suggest the product and service available with Airtel at the moment for that particular user. This QR code will be made available throughout the country via different communication media to ensure that Airtel customers get easy access to it.
Source: https://www.telecompaper.com/news/airtel-launches-qr-code-based-campaign-in-bangladesh--1228862