HTTPClient library supports https using a fingerprint (SHA1) which can be extracted from the browser. This hash is outdated and should be replaced at some point. For now it is the easiest way to do a HTTPS request. Another option might be using a [using CA certificate via the WiFiClientSecure library](https://github.com/esp8266/Arduino/blob/master/libraries/ESP8266WiFi/examples/HTTPSRequestCACert/HTTPSRequestCACert.ino).
SPPS System Pvt. Ltd. a Attendance Solutions Company, is the biometric industry's leading independent integration and consulting firm, providing a broad range of biometric services and solutions.
W. Petersen, and M. Werning. Proceedings of the 15th International Conference on Conceptual Structures (ICCS 2007), volume 4604 of Lecture Notes in Artificial Intelligence, page 415-428. Berlin, Heidelberg, Springer-Verlag, (July 2007)