Airtel has launched mchek, a mobile-based payment system that allows its post-paid customers to pay their telephone bill over their phone. Airtel subscriber can sign up for the service either through the Internet or through their mobile phone by sending the SMS ‘Mchek’ to 458.
Subscribers will then have to choose Mchek Pin as the password. To make a payment, subscribers needs to enter their 16-digit credit card number along with the card expiry date and CVV number. Next, they have to SMS’ PAY AIRTEL’ and the bill amount. Once they can confirm the transaction by typing ‘PYMNT’ and SMSing to 121.
Source: The Indian Express
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What about security. SMS’s are not encrypted, so everyones credit card details will be there on the sms server. Any of the employees can sell these cards and misuse them.(not that airtel employees are theives). But still it is open.
As far as I know there is no “https” in mobiles so that there is absolutely no security.