idemia L1 RD Service is used to prepare biometric templates of Aadhaar holders used for UIDAI authentication. It can be used for idemia L1 devices only. Note - 1) RD service is not designed to work as a standalone application. It will work only with the operator's applications like (Jio, Airtel, Idea, banks, etc.). Please don't try to use the RD service directly. 2) If the smartphone is not able to detect fingerprint devices then please make sure that your phone is OTG supported. If the smartphone is OTG supported then make sure that you have enabled the OTG option from settings.