If you live in India, you might have noticed that Secure Payment option in your adsense account settings is missing or no more available in your adsense settings. Instead of that, AdSense publishers in India will receive standard delivery checks mailed via the local courier service Blue Dart for no additional charge. Cheques mailed by Blue Dart should arrive within 10-30 days of the cheque date.
So the Secure Payment option has been removed from all the Indian adsense publishers account.
If your account reaches 100$ or more in any given month and if all the holds are removed, then you will be able to see the payment Tracking number on the payment history page of your account from 15th of that month. And you can also track the payment status at www.bluedart.com using your Tracking number.
Blue Dart is not able to service all areas throughout India. If you live in a location they don’t service, your check will be sent by Registered Post and should reach you within 2-3 weeks of the mailing date.
Source: Google Help